Definition of solid in English:



  • 1Firm and stable in shape; not liquid or fluid.

    ‘the stream was frozen solid’
    ‘solid fuels’
    • ‘Currently, most rockets use a solid or liquid propellant that relies on a chemical reaction between fuel and oxidizer for thrust.’
    • ‘They were both found to have died from carbon monoxide poisoning from their solid fuel boiler.’
    • ‘SpaceShipOne uses a hybrid rocket engine that uses both liquid and solid propellant to propel it into space.’
    • ‘Particulate air pollution is a mixture of solid particles and liquid droplets that vary in size, composition, and origin.’
    • ‘You've learned that the Universe is a solid structure and so you've resigned to it, but the Universe is not exactly solid, it is fluid.’
    • ‘As a result, the calcium carbonate comes out of solution and is left behind as a tiny bit of solid calcium carbonate.’
    • ‘Most launch vehicles use liquid propellants, but some use motors with solid fuels.’
    • ‘A liquid crystal is a substance that apparently falls between the solid and liquid states.’
    • ‘When heated this produces methane gas and a solid residue of sodium carbonate.’
    • ‘The solid electrolyte is environmentally safer than the liquids used in other batteries.’
    • ‘A third type, called a hybrid, combines a solid fuel with a liquid oxidizer.’
    • ‘The tar consists of solid particles and vapors that condense to liquid as they contact the cooler filter.’
    • ‘The firm began with Mr Wilson selling small amounts of coal, and is now the oldest solid fuel firm in the area, with a very loyal customer base.’
    • ‘This process would produce a substance that remained liquid when hot and solid when cooled.’
    • ‘The solid paraffin melts, changing into a thick molasses-like liquid.’
    • ‘Hydrocarbons range from natural gas, through light and heavy liquids to solid tars and bitumen.’
    • ‘Because solid propellant is so stable in storage, the missile can be stored almost indefinitely and yet be ready to launch on short notice.’
    • ‘The simile is appropriate; glass is a super-cooled liquid - solid, yet molecularly amorphous.’
    • ‘Time for a nice warming brew then - well, perhaps not - first of all everything liquid was frozen solid, and that even included the cooking oil.’
    • ‘The triple point of water is the temperature at which gas, liquid and solid phases are in equilibrium - just above freezing.’
    hard, rock-hard, rigid, firm, solidified, set, frozen, jellied, congealed, concrete
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    1. 1.1Strongly built or made of strong materials; not flimsy or slender.
      ‘a solid door with good, secure locks’
      • ‘You cannot build a skyscraper without a solid foundation, strong steel and good building materials.’
      • ‘I'm nearly six feet of solid girl with large hips and long legs!’
      • ‘The walls, of course, are built of solid material.’
      • ‘He was a very impressive figure, muscular and solid.’
      • ‘The Porter on duty was a big, solid chap with a strong, creased face.’
      • ‘A really solid, sculptural dining table may work well as a stand-alone piece.’
      • ‘Imagine that you are surrounded by an outer shell that is made of a solid material - so strong that nothing can get through to hurt you.’
      • ‘At 39, he is six foot plus of solid framework, with a short, brush-spiked crew-cut and a welcoming smile.’
      • ‘The little hut was ugly, but it made a strong, solid dwelling.’
      • ‘Stand-ins for the Paramount movie logo, they represent, like the original, an idealised America: solid, strong, historic.’
      • ‘The leather steering wheel is bigger than the average, the door handles strong and solid and the pedals sporty.’
      • ‘Stacking large slabs on one another against a spine of uprights within a revetment wall seems a very effective way to create an illusion of a well built and solid cairn.’
      • ‘The material wedged into a solid cradle at its base, ballast to prevent its tipping, must have been shattered by the force of its fall.’
      • ‘Her voice was solid and strong, but her eyes were spilling tears.’
      • ‘The fins themselves had to change from a fan of slender fin-rays to more solid load-bearing digits.’
      • ‘I felt compelled to buy a very solid, very heavy rounders bat after I saw it.’
      • ‘They made handguns to a high standard and of a strong, solid frame design.’
      • ‘And I feel really solid and strong and I have a lot of joy in my life.’
      • ‘It's possible that she could compete at 18 as a solid six footer.’
      • ‘Cross-country fences are traditionally made out of solid materials such as tree trunks, and do not collapse like show jumps when struck.’
      well built, well constructed, sound, substantial, strong, sturdy, stout, durable, stable
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  • 2Having three dimensions.

    ‘a solid figure with six plane faces’
    • ‘He also gives rules for measuring both plane and solid figures, often using arches as examples.’
    • ‘Yes there is, for Piero illustrates the text with diagrams of solid figures drawn in perspective.’
    • ‘Take a solid object, such as a cube which has width, length, and height.’
    • ‘This is the first solid figure, the three-dimensional form of the triangle.’
    • ‘Theodosius defines a sphere to be a solid figure with the property that any point on its surface is at a constant distance from a fixed point (the centre of the sphere).’
    1. 2.1[attributive]Concerned with objects having three dimensions.
      ‘solid geometry’
      • ‘He goes on to consider solid geometry giving results on prisms, cylinders, and spheres.’
      • ‘We are not yet collectively convinced that the need is compelling, despite the wide applicability of fluid and solid mechanics.’
      • ‘References to Euclid's work on solid geometry clearly no longer looked intimidating.’
      • ‘In the Republic, Plato is critical of the solid geometry of his day, but his criticism makes no mention of the use of instruments.’
      • ‘The first students of conic sections, and possibly Theaetetus, the creator of solid geometry, were members of the Academy.’
  • 3Not hollow or containing spaces or gaps.

    ‘a sculpture made out of solid rock’
    ‘a solid mass of flowers’
    ‘the shops were packed solid’
    • ‘It would be better if it were backed with a sturdy door of solid American oak that could be slammed shut and dead-bolted when necessary.’
    • ‘The bright and dark patterns on Titan's surface may be regions of solid ice and of liquid hydrocarbons.’
    • ‘Opening up whole, free standing buildings out of solid rock is no mean achievement and these churches amply illustrate that man can indeed move mountains.’
    • ‘In the process of being buried under other sediments, these ooids can fuse into a solid mass of sedimentary rock called oolite.’
    • ‘The theater is a cavernous space, seemingly carved from a solid mass of desert rock, like Petra, in Jordan.’
    • ‘Right now, in a factory in the Far East, a 6ft-high solid bronze sculpture of an animal is being made for the garden.’
    • ‘A solid mass of white water surged around great pinnacles of rock, over a hundred feet below me.’
    • ‘This sculpture is not a solid block of concrete.’
    • ‘I think of it as arising from pain fibers that are not mucosal but deeper in hollow organs or in solid masses.’
    • ‘Apart from being very difficult to cast a solid bronze figure without distortion, the weight would be a major problem.’
    • ‘Most magic tricks are done with specially made gadgets that are deceptively hollow but which look solid.’
    • ‘There, he fitted the tied brushes in the bamboo poles and changed hollow brushes into solid brushes.’
    • ‘We think that rocks and crystals are solid when in fact they were made up mostly of spaces in between atoms, he argued.’
    • ‘However, it is generally recognized that this assumption is applicable to virtually no solid tumor growing in vivo.’
    • ‘The road from the railway war memorial to Lendal Bridge was a solid mass of people who surged after the limousine towards the city centre.’
    • ‘Two virtually solid granite walls face the campus, while two walls of glass open up to views of the woods beyond.’
    • ‘While small sculptures may be solid, most casts are hollow shells.’
    • ‘That means there is about one inch of dirt before you hit solid rock.’
    • ‘The opening shower didn't feel like rain, it was more like a solid mass of water that fell, hit the roofs and the streets and rebounded into a spray that hung around our ankles.’
    • ‘The computational domain is limited to a quadrant of the solid rock mass including the shaft bottom.’
    1. 3.1Consisting of the same substance throughout.
      ‘solid silver cutlery’
      • ‘There had been plans to produce a replica in solid silver for Prince John, but he died before it was made.’
      • ‘The house measures 167 square metres and has solid timber flooring throughout, a maple kitchen and an ADSL line in the study.’
      • ‘It is a beautiful solid silver trophy, befitting the memory of a great but modest man.’
      • ‘Mary travels with a lifesize statue of Padre Pio which was carved from a solid piece of Samoan mahogany by Californian sculptor Tom Benson.’
      • ‘On display was a solid silver bitter dish which was presented to the show society over 100 years ago as the perpetual cup for the best dairy cow of any breed or class.’
      • ‘The cup, made from solid silver, has been kindly donated to Cumbria Sport, the organisers of the Games, by the Cumbria Playing Fields Association.’
      • ‘Candlesticks are adorned with feathers or solid silver wire.’
      • ‘All four penthouses have solid beech floors throughout and the other three are extremely bright and have large bay windows.’
      • ‘In this study by IARC, other known carcinogenic substances in solid wood were not identified.’
      • ‘Hopes of completing the nation's first memorial to the ill-fated HMAS Sydney could rest on the wings of a solid silver seagull.’
      • ‘Not surprisingly, the Hunter 1250 features solid steel construction throughout.’
      • ‘The insects hitch rides across oceans in wooden crates and other solid wood materials used in shipping, he explains.’
      • ‘Within Islam, Muhammad is never pictured; therefore, Demi depicts him as a profile figure of solid gold.’
      • ‘He came by the solid silver foot-high treasure after it was taken from the ruins of Goering's country home at the end of Second World War by a British soldier.’
      • ‘The apartment itself has solid oak flooring throughout and the inner hall features built-in floor to ceiling fitted wardrobes.’
      • ‘The elevated front door opens into a roomy hall decorated in pale aqua and floored in the solid maple that features throughout the living quarters.’
      • ‘They are fitted out with solid wood floors throughout and marble tiling in the bathrooms and shower rooms.’
      • ‘Furniture is constructed of solid wood and natural materials.’
      • ‘I asked her to imagine beginning with a bridge of solid steel, strong enough so that it wouldn't buckle and collapse as cars drove over it.’
      • ‘This certainly chimes better with the Queen's own view of the world, in which even the corgis eat out of solid silver bowls.’
      pure, 24-carat, unalloyed, unmixed, unadulterated, genuine, complete
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    2. 3.2(of typesetting) without extra space between the lines of characters.
      • ‘Text set solid (no leading) appears cramped, with ascenders almost touching descenders from the previous line.’
    3. 3.3(of a line or surface) without spaces; unbroken.
      ‘the solid outline encloses the area within which we measured’
      • ‘In the map of Sc-like genes, the solid line represents cloned sequences; the dashed line shows an uncloned region.’
      • ‘Directly dated geological boundaries are shown with solid line and grey circle.’
      • ‘Again, solid lines are for mutators and dashed lines for nonmutators.’
      • ‘The thin solid line represents the main culm; all other line styles for each tiller origin are as shown in Fig.1.’
      • ‘The solid line, the dotted line, and the dashed line represent the cases of, and, respectively.’
      • ‘The mean GUS activity value for each construct is represented by a solid line and the standard error by two dashed lines.’
      • ‘The solid line represents cumulative fruit size and the dotted line the pressure applied to the roots.’
      • ‘The solid lines indicate a relationship of instantiation; the broken line indicates the similarity between the instances.’
      • ‘Treatments are control (filled diamonds, solid line) and lime (filled squares, dotted line).’
      • ‘The solid lines correspond to soft selection, while the dashed lines plot hard selection.’
      • ‘The red solid line is the driving that will be done.’
      • ‘A hypothetical rectangular habitat is outlined by a thick solid line.’
      • ‘The near side lane going down has only a dashed and solid line, which means overtaking is perfectly legal where safe to do so.’
      • ‘Model output is represented by solid lines, gene expression data by dashed lines.’
      • ‘Inverted repeats are marked with a solid line arrow and stemloops are marked with a dashed line arrow.’
      • ‘The average values for the whole family are indicated with a solid line for identity and dashed line for similarity.’
      • ‘The solid line represents feeding group 1, while the dashed line represents feeding group 2.’
      • ‘Thin solid lines enclose a region in which 95% of the simulated data points are expected to lie.’
      • ‘The solid line depicts the normal least squares regression line.’
      • ‘Type A is drawn with a solid line and Type B is represented by the dotted line.’
    4. 3.4(of time) uninterrupted; continuous.
      [postpositive] ‘it poured for two hours solid’
      • ‘I'd been among their ranks for a solid six hours by the time we got to question period, and honestly, by this point all I could think about was getting the hell out of there.’
      • ‘Anyway, he watched his new vicious pet and this pathetic looking streak of yellow fins for three days solid.’
      • ‘She never said a word about the book and when I read it I cried for three days solid.’
      • ‘Give it a solid three days of good nutrition and see if it makes a difference.’
      • ‘No reason at all, unless it was the fact that I had a solid 8 hours of uninterrupted sleep!’
      • ‘I did play it solid for the three-day rental, but I never felt I absolutely had to finish it.’
      • ‘Give yourself about six solid months of training to prepare for your first ultra.’
      • ‘This weekend the Cinémathèque québécoise will be presenting a veritable orgy of animation for three days solid.’
      • ‘I have been at sea for more than 30 years and on my very first trip I was sick for three days solid.’
      • ‘‘I'd been there for three days solid, just waiting for things to fall into place ’, he says.’
      • ‘It's three days solid with only petrol stations along the way.’
      continuous, uninterrupted, unbroken, non-stop, unremitting, incessant, constant, consecutive, undivided
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    5. 3.5Unanimous or undivided.
      ‘they received solid support from their teammates’
      • ‘To achieve all this, we need the solid support of our public.’
      • ‘And I believe there's solid support to enable the President to proceed along these grounds.’
      • ‘Despite his offences against strict conservative doctrine, Lucas retains a solid core of support among the Christian right.’
      • ‘This one-time Democratic bill about reforming the accounting industry now has very, very solid support in the Senate.’
      • ‘The 2nd is a fairly solid Republican district.’
      • ‘Each of the candidates has a solid core group of support.’
      • ‘The controversial talks with Springfield Residents, first revealed on Thursday, are said to have the solid support of the Grand Orange Lodge of Belfast.’
      • ‘Recall that Latham was elected leader of the Labor Party in December 2003 by just one vote, with the solid support of the Left faction.’
      • ‘So far, most polling (no matter how it is spun by the financial press) shows that support for ratifying is solid.’
      • ‘One fact, at least, shows that a change in the law has less solid support than suicide self-help groups might like to think they have.’
      • ‘Others are also critical of the ban on groups like the Brotherhood - which have solid grassroots support that could be used in elections.’
      • ‘He knew he needed solid media support to push his reforms.’
      • ‘He has had solid and growing support from his constituents through four elections.’
      • ‘Demonstrators united in a solid show of support for a university professor at the centre of a sacking row.’
      • ‘It also enjoys solid support from gays and Hispanics, the nation's fastest-growing minority.’
      • ‘Wellstone's negatives are already high, and political ads aren't likely to dent his solid base of support.’
      • ‘He pledged solid US support on a tour to inspect the Asian tsunami damage.’
      • ‘The union said it expected solid support for the latest walkouts against SWT in a long-running dispute over pay and disciplinary procedures.’
      • ‘So far, the South Koreans seem solid in their support for the war against Islamofascist terror.’
      • ‘All three mainline parties can count on solid bedrock support of some minimum percentage of the electorate.’
      unanimous, united, uniform, consistent, undivided
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  • 4Dependable; reliable.

    ‘the defence is solid’
    ‘there is solid evidence of lower inflation’
    • ‘Portlaoise were the better team overall with a solid defence, a strong midfield and an attack that could create and take the scoring chances.’
    • ‘A man who has spent over 20 years of his football career at just two clubs is sure to be reliable, solid and trustworthy.’
    • ‘His custodial skills also include a reliable three-point shot, solid defense, and unending hustle.’
    • ‘The home side got off to much the better start to this J1 game with their solid defence and strong tackling causing problems for the visitors.’
    • ‘Overall, the bench is solid, but not strong enough to lift New Orleans to a division title.’
    • ‘The real man was solid, dependable, loyal, uncomplaining, quick to act and slow to forgive.’
    • ‘I need solid evidence and can't allow my official power to be decided by the media.’
    • ‘Limerick can be depended on to be solid in defence and more than competitive at midfield.’
    • ‘Golborne were kept goalless by a strong midfield and a solid defence.’
    • ‘All were based on solid research into primary materials.’
    • ‘The culture of the field has always depended far more on intuitive appeal than on solid research evidence.’
    • ‘Camp communities are powerful tools in youth development and solid bridges to building strong communities both in and out of camp.’
    • ‘Well, the caller made a really good point about how strong, how solid was the DNA.’
    • ‘But while such signs of speculation are troubling, there is little solid evidence that a real estate bubble is puffing up.’
    • ‘The result is increased reliance on concept stories that don't require solid material like sources and new developments.’
    • ‘It's built up, as I said, over two or three decades of strong, solid research so if it is the flavour of the day, then there's good reason for it.’
    • ‘To some he was solid, reliable, well-intentioned and a rugby man to the tips of his bootlaces.’
    • ‘Aquarius, you only want what every other human being wants: a life that's solid, dependable, and fun.’
    • ‘The Nissan Cefiros have had a good reputation all over the world as good, solid, reliable and dependable transport.’
    • ‘They paint the approach as a disarming subterfuge designed to undermine solid evidence that all living things share a common ancestry.’
    well founded, well grounded, valid, sound, reasonable, logical, weighty, authoritative, convincing, cogent, plausible, credible, reliable
    dependable, reliable, firm, unshakeable, trustworthy, stable, steadfast, unfailing, staunch, constant, unwavering
    sensible, level-headed, dependable, trustworthy, down-to-earth, decent, law-abiding, upright, upstanding, worthy
    financially sound, secure, creditworthy, of good financial standing, in funds, profit-making, able to pay its debts, debt-free, solvent, in credit, not in debt, out of debt, in the black
    View synonyms
    1. 4.1Sound but without any special qualities or flair.
      ‘the rest of the acting is solid’
      • ‘We became more and more desperate for solid teaching and strong fellowship, so we turned to the books on our shelves.’
      • ‘I was beginning to show fatigue, but he continued on at a solid pace.’
      • ‘Audio/visual quality here is solid, with clean transfer and excellent sound, especially the DTS track.’
      • ‘It was a solid finish to a strong quarter for much of the credit market.’
      • ‘The Swedish group Harmony of Voices give solid performances throughout.’
      • ‘The acting is uniformly solid, with no character emerging as a lead, and technically, the film is top notch.’
      • ‘They buy strong companies with solid management that have fallen out of favor and hold them until their stock prices climb to the true value.’
      • ‘Alison Broadley, Debbie Bowman and Edward Cowen are the strongest among a solid cast.’
      • ‘With good material and a solid director, she shines.’
      • ‘The bottom line is that both sets deliver solid sound quality, although the E1C does deliver better detail in the high midrange.’
      • ‘He'd be there to share his unparalleled work ethic with the team's newcomers and continue to deliver solid numbers night in, and night out.’
      • ‘The American economy continues on a solid path of recovery.’
      • ‘The site itself is graphically less impressive, but the material is solid.’
      • ‘The combination of solid musicianship and quality vocals made this a band to really take note of.’
      • ‘Matthews has undoubtedly produced a record of solid quality, unable to disappoint even the most intoxicated of frat hopping fans.’
      • ‘Sound quality is solid if unspectacular across the board, though the dialogue is a mite whispery in places.’
      • ‘Having a strong brand identity, solid management and positive cash flow mean a lot if your company is to be the market leader.’
      • ‘With strong performances and a solid story, Turn of Faith is worth your time.’
      • ‘The film had its premiere at the prestigious Sundance Fest in Utah in January, where it played to solid reviews and strong interest from distributors.’
      • ‘The day was strongly contested with solid bowling from all the teams.’
  • 5US informal On good terms with.

    ‘he thought he could put himself in solid with you by criticizing her’
    • ‘And now you're in solid with her because you've got a car.’
  • 6Australian informal Severe; unfair.

    ‘they'll be solid on him for that mistake’
    • ‘After this critique of Trotsky, Lenin really comes down solid on him.’


  • 1A substance or object that is solid rather than liquid or fluid.

    • ‘Unless they are removed often, not only will the tank tend to back up the incoming sewage lines, that mat will force other incoming solids into the other side of the tank.’
    • ‘But then scientists unexpectedly discovered that the only difference between solids and space was the degree to which the same atoms that composed both were packed more or less closely together.’
    • ‘According to Brownlee, the loose aggregate of particles seen on comets may represent the first generation of solids in the solar system.’
    • ‘I was reminded of high school physics where we learned that solids conduct sound better than both liquids and gases.’
    • ‘Typical speeds of sound in solids are 5,000 meters per second, but vary considerably from one solid to another.’
    • ‘In one dock, enough solids accumulated during a single year to advance the low water line 5.4 meters.’
    • ‘All common solids will typically go through one of three types of transformations when heated.’
    • ‘In school we learned that primary waves can travel through solids, liquids, and gases.’
    • ‘Brattain, Ph.D., was an expert in the nature of the atomic structure of solids at their surface level and solid-state physics.’
    • ‘It went up forever, but on the bottom there was a ‘bubble’ opening that only solids could pass through.’
    • ‘Certainly the theorems which Galileo had proved on the centres of gravity of solids, and left in Rome, were discussed in this correspondence.’
    • ‘Instead, they simply induce small local fluid transits about the surface of the mass of stored solids.’
    • ‘Earlier this year, ammonia and suspended solids came straight from the plant into the river.’
    • ‘First, cells are not linear elastic solids: their continuum response varies with strain.’
    • ‘Any leftover solids are collected and composted.’
    • ‘Thus, the net supply of riverine solids to the deep open oceans is not significantly greater than that from aeolian transport.’
    • ‘Although they are called ‘weak’, they are amazingly strong - they can pass through solids without stopping.’
    • ‘‘Architecture is all about light, height, voids, solids and obviously, underpinning it all, a plan that works,’ she said.’
    • ‘Tattooing is the method of using a needle or some other sharp object to force suspended colored solids through the epidermis into the dermis.’
    • ‘There is a pipe on it designed to deal with overflow but solids are now coming through and flowing into the river, he said…’
    1. 1.1Food that is not liquid.
      ‘she drinks only milk and rarely eats solids’
      • ‘Each new development is a milestone to share: the first smile, the first solids - the first night slept through!’
      • ‘Evidently excited to still be on solids, they have a traditional English breakfast consisting of tea, canned beans and crumpets flown to their San Francisco hotel every day.’
      • ‘There is no added salt or corn syrup solids.’
      • ‘His diet should start with liquids, then soft foods, and then solids.’
      • ‘Even after ice cream freezes, there is still some available water free to migrate, due to the level of dissolved solids in the mix.’
      • ‘Because I'm no longer ingesting solids, every morning I have to chug a gag-inducing litre of warm salt water to flush out any leftover solids still hanging out in my digestive tract.’
      • ‘Transfer the solids into the food processor (or only part if you enjoy chunky soup like I do), and whizz into a purée.’
      • ‘At this point, you can choose to purée none, some or all of the solids, depending on how you like your soup.’
      • ‘I was in the hospital drinking out of a straw for almost a month and a half since my insides couldn't handle solids.’
      • ‘Strain through a fine mesh sieve lined with cheesecloth, discard solids and set aside, keeping warm.’
      • ‘Babies can have food allergies if solids are started too early.’
      • ‘My ice creams, like the smoked bacon with pain perdu, are formulaically created to get the right levels of solids in them to stop crystallisation.’
      • ‘You have to get the leftover solids to ferment and then you have to distill them.’
      • ‘This problem is exacerbated in the fermentation of white grape varieties where, in an attempt to produce a wine with clean, pronounced varietal character, the must is kept highly protected from air and with a very low level of grape solids.’
      • ‘Remove the mint stems from the soup, and purée part or all of the soup with a hand blender (or by transferring the solids into a food processor) until the desired smoothness is reached.’
      • ‘Transfer all or part of the solids into a food processor, purée and return to the saucepan.’
      • ‘One area we're working on at the moment is puréed food for patients who cannot eat solids.’
      • ‘I learned to chew on my left side, and eat only soft foods such as ice cream, rarely touching true solids, like swirls.’
      • ‘When your baby is ready for solids, making baby food is healthier, eco-friendly, and less expensive than the jars.’
      • ‘As it heats scum will be thrown to the surface which should be skimmed off & the milky solids will drop to the bottom.’
  • 2Geometry
    A body or geometric figure having three dimensions.

    • ‘Volumes of solids such as prisms, pyramids, tetrahedrons, wedges, cylinders and truncated cones are calculated.’
    • ‘In several smaller wall pieces from 1990, bent cardboard planes are connected by segments of translucent plastic to create lozenge-shaped geometric solids.’
    • ‘He abandoned his cherished idea of a universe based on geometric solids when it was obvious that it simply did not fit the evidence.’
    • ‘In particular he identified the five elements, fire, earth, air, water and celestial matter with the five regular solids, the tetrahedron, cube, octahedron, icosahedron and the dodecahedron.’
    • ‘As space is three-dimensional, he went on to experiment with three-dimensional geometric solids.’


Late Middle English: from Latin solidus; related to salvus safe and sollus entire.