Definition of addition in US English:

addition

(also addn.)

noun

  • 1The action or process of adding something to something else.

    ‘the hotel has been extended with the addition of more rooms’
    • ‘With the addition of a few commas and the striking out of the one paragraph, the deal already on the table will finally go through.’
    • ‘The camera obscura box reproduced these conditions and clarified the images with the addition of a lens.’
    • ‘The garden will continue to be developed in the future with the addition of an aromatic walkway planned for next year.’
    • ‘This classic snack can be varied with the addition of thinly sliced smoked chicken or turkey and avocado.’
    • ‘It was tender, juicy and tasty, especially with the addition of the salty pork wrapping.’
    • ‘Make old timber look new with the addition of vinegar and blasting it with a blowtorch.’
    • ‘Bolton's nightlife is due to expand again with the addition of another trendy wine bar.’
    • ‘The sweltering conditions will run into the middle of next week with the addition of the odd thunderstorm.’
    • ‘Division two saw the usual suspects duelling it out with the addition of some new faces.’
    • ‘The town of Belmullet looks splendid and bright with the addition of new lights.’
    • ‘This is not the case these days; with the addition of violence, things have turned a bit uglier.’
    • ‘Turkey and the trimmings can be improved dramatically with the addition of a well chosen wine accompaniment.’
    • ‘The new year has brought some dramatic changes at the loch with the addition of three new fisheries.’
    • ‘A community transport scheme has been given a major boost with the addition of an extra vehicle.’
    • ‘A wakeboard is similar in shape to a snowboard, with the addition of two small fins on the underside.’
    • ‘You can make them more formal with the addition of a diamanté brooch to use as a clasp on the front or the back.’
    • ‘It can work on hair that is fine or thin with the addition of hair pieces or extensions.’
    • ‘The colour range favours warm and tropical colours, with the addition of blue and sea green.’
    • ‘In the kitchen, a truly rural feel is added to the kitchen with the addition of a solid-fuel Aga.’
    • ‘At a later stage they were subsequently sold as Van Goghs, occasionally with the addition of a false signature.’
    inclusion, adding, adding in, incorporation, introduction, insertion
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    1. 1.1 A person or thing added or joined, typically in order to improve something.
      ‘you will find the coat a useful addition to your wardrobe’
      • ‘Apart from taking up the renovation works, a few additions have been made in the premises.’
      • ‘There seemed to be more extended scenes rather than whole new scenes but there were one or two excellent new additions.’
      • ‘The new additions to the gameplay and this new story keep me up till way past my bedtime.’
      • ‘There are lots of new additions showcased and you're sure to find something interesting.’
      • ‘The intention is to add more tours to the database each year so that visitors will be able to return and catch up on the latest additions.’
      • ‘A survival course is one of the latest additions to the club's list of extreme sports.’
      • ‘With many riders returning, there are also many new promising additions to the club.’
      • ‘Even beetroot and spinach can be rendered palatable with a little juicing and some judicious additions.’
      • ‘There will also be several additions to teaching programs in the faculty of education.’
      • ‘While both look to be excellent additions, it remains to be seen whether or not this season will be as memorable as the last.’
      • ‘This is the same encyclopedia, with multimedia additions, that used to take up a huge bookshelf.’
      • ‘But they have spent wisely and have made a lot of good additions to their squad.’
      • ‘We'll be watching forthcoming additions to Guardian Unlimited with interest.’
      • ‘Students will not have to pay for these additions until we begin to use the facilities.’
      • ‘See all the new additions to the city skyline in our picture gallery.’
      • ‘A stationary shop in George Street has been branching out with some unusual additions to its stock.’
      • ‘Other new additions include a search facility from Google and an expanded links section.’
      • ‘But opposition councillors found a number of unexplained additions in the report.’
      • ‘The new design was intended to create more internal space, which meant stripping away the additions at the back.’
      • ‘They too have a number of big additions to their side from last year in attack.’
      supplement, appendage, adjunct, addendum, add-on, extra, accompaniment, extension, rider
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  • 2The process or skill of calculating the total of two or more numbers or amounts.

    ‘she began with simple arithmetic, addition and then subtraction’
    • ‘In this addition sum each letter represents a digit, different letters being different digits.’
    • ‘Basically they had to devise methods of multiplication and division which only involved addition.’
    • ‘To see the sort of difficulty that can arise, let us consider addition first.’
    • ‘The only way is up - addition works in three dimensions but what about multiplication?’
    • ‘Our old maths teacher was teaching addition to the kids and she asked us to look on as she went along with her class.’
    • ‘That's likely a trace to the way many of us learned to count and do basic addition.’
    • ‘Such a machine would be able to carry out complex operations using only the mechanism for addition.’
    • ‘She showed that babies can even do addition and subtraction, of a rudimentary sort.’
    • ‘As one might expect, multiplication of infinite decimals is more complicated than addition.’
    • ‘That is addition, multiplication and the two inverse operations of subtraction and division.’
    • ‘They are great at the game of subtraction, when the game of parliamentary politics is addition.’
    • ‘The Count Hoot section of the site helps with addition and subtraction as well.’
    • ‘Yet addition and also subtraction are only an extension of counting.’
    • ‘The addition of three points to his team's total is a minor calculation.’
    • ‘If the slip is accompanied by a number of items, the payee's addition of the sums is verified.’
    adding up, counting, totalling, computation, calculation, reckoning, tallying, summation
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    1. 2.1Mathematics The process of combining matrices, vectors, or other quantities under specific rules to obtain their sum.
      • ‘We were reviewing vector addition this evening at a study session.’
      • ‘If you want to know the total force which is exerted on the body, you have to carry out a vector addition.’
      • ‘Superimposing the two logical operations we can define binary addition.’
      • ‘This suggests that Component 3 is not a vector addition but could be a single component.’
      • ‘We have now defined two operations for matrices, addition and multiplication.’

Phrases

  • in addition

    • As an extra person, thing, or circumstance.

      ‘members of the board were paid a small allowance in addition to their normal salary’
      • ‘That in addition to monthly remuneration at the same rate he was paid while head of state.’
      • ‘Some employers also offer extra time off and more money for fathers in addition to SPP.’
      • ‘The Treasury has given several hundred million pounds in addition to what we are already putting in.’
      • ‘It is one of the few of its kind in the country and, in addition to Bolton, it will also serve surrounding towns.’
      • ‘Those explosions are in addition to a number of bomb threats in the city each week.’
      • ‘Chemists made up their own remedies in addition to selling the many patent medicines available.’
      • ‘This is in addition to the animals legitimately left at the shelter by their owners.’
      • ‘All sorts of unusual kites were flown, and in addition there were a number of stalls and workshops.’
      • ‘This is in addition to the usual information, such as the location of property lines and buildings.’
      • ‘I have a few things to do today, in addition to trying to catch up on some more sleep.’
      • ‘This tax is in addition to the ordinary stamp duty payable by the buyer of property.’
      • ‘There were also specially commissioned works of art in addition to many food stalls and a funfair.’
      • ‘How many things are you doing right now in addition to reading this column?’
      • ‘He received a two-year sentence which he will serve in addition to his current jail term.’
      • ‘The schemes which you mention in your letter are in addition to this figure.’
      • ‘This is in addition to three reminder letters asking for the information I had already sent.’
      • ‘There was fun and games and treats and these were in addition to a much enjoyed bouncy castle.’
      • ‘So I resat five modules in January, in addition to three Maths modules that were not resits.’
      • ‘Madrid and Moscow are also vying for the Games, in addition to New York and Paris.’
      • ‘That is in addition to paying the wages of the huge number of rural administrators.’
      additionally, as well, what's more, besides, furthermore, moreover, also, into the bargain, to boot
      besides, as well as, on top of, along with, plus, over and above
      View synonyms

Origin

Late Middle English: from Latin additio(n-), from the verb addere (see add).

Pronunciation

addition

/əˈdɪʃ(ə)n//əˈdiSH(ə)n/