Definition of accelerator in English:



  • 1A person or thing that causes something to happen or develop more quickly.

    ‘the country has been the main accelerator of global growth for a decade’
    • ‘Moreover, ginger is also known as a metabolism accelerator.’
    • ‘Our study underscores the importance of elastin fragmentation in the vessel wall as an accelerator of atherosclerosis.’
    • ‘The increase in the performance of graphics accelerators frees additional CPU cycles that can be used for real-time physical world modeling.’
    • ‘Smith was frightened enough to move fast - the sound of gunfire was an excellent accelerator.’
    • ‘Does it take advantage of any 3D accelerator cards?’
    • ‘The moisture in the clothing serves as an accelerator for heat loss.’
    • ‘In the past few years, research institutions have begun to compile both the necessary data and sophisticated analysis of various causes and accelerators of different kinds of conflict.’
    • ‘"Trust is an accelerator of performance, and mistrust derails even the best strategy."’
    1. 1.1A venture or program that promotes and aids the rapid growth of selected new small businesses.
      ‘an accelerator for start-up technology companies in Buenos Aires’
      [as modifier] ‘a record number of women-led start-ups are participating in the accelerator program’
      • ‘Our vision for 2020 is for the UK to be the most investment-friendly environment for fintech globally, attracting $4bn of venture investment and $4bn of institutional investment in corporate venture funds, accelerators and innovation programmes.’
      • ‘A new agricultural technology business accelerator was officially launched last week out of St. Louis.’
      • ‘He has established an accelerator for young entrepreneurs coming from Israel to build out their businesses in the heart of New York's burgeoning technology scene.’
      • ‘The 40 companies that have graduated from the accelerator in the past two years have raised an average of over a $1m each.’
      • ‘Today, the city is bursting with incubators and accelerators, and events for startups.’
      • ‘A big chunk of the talk was spent warning about the proliferation of accelerators and other programs that offer business guidance in exchange for equity.’
      • ‘Across the country, business incubators and accelerators reflect the needs and wants of their respective communities.’
      • ‘While startup support for general business has become more readily available, an industry-specific accelerator can provide more knowledge and resources for building.’
      • ‘The start-up received a $50 000 cash investment from the accelerator, and last year it raised funds from angel investors but has not disclosed the exact amount publicly.’
      • ‘Surge Ventures LLC recently graduated its fourth class of companies from its business accelerator.’
  • 2A device, typically a pedal, that controls the speed of a vehicle's engine.

    ‘he pressed the accelerator to the floor and the taxi shot forward’
    figurative ‘the bank will have its foot on the accelerator until the economy starts to recover’
    • ‘He put the key into the ignition and fired the engine, then pressed the accelerator pedal down so that the engine roar drowned out Kate's next words.’
    • ‘He had no choice but to ease his foot on the accelerator and let his speed drift down to about 20 mph.’
    • ‘When you come to a halt, the car cuts out after a few seconds to preserve energy; the engine then fires again when your foot returns to the accelerator.’
    • ‘He hit the accelerator full on, no longer caring about traffic or the police.’
    • ‘In fact, moving my foot from the accelerator to the brake was difficult as it kept catching on something under the panel.’
    • ‘When the driver takes his/her foot off the brake and puts it on the accelerator, the engine re-starts automatically and almost seamlessly.’
    • ‘I easily left him behind without flooring the accelerator.’
    • ‘The only thing I noticed was the engine braking which dragged the car slower when I took my foot off the accelerator.’
    • ‘I put my foot down on the accelerator and sped away from the city.’
    • ‘He stopped speaking suddenly when Carl jammed the van into reverse gear and slammed his foot down on the accelerator pedal.’
  • 3Physics
    An apparatus for accelerating charged particles to high velocities; a particle accelerator.

    ‘electron accelerators’
    • ‘Physicists learned most of what they know about the fundamental forces of nature by using larger and larger accelerators to smash subatomic particles together.’
    • ‘Accelerator design was, of course, a relatively new field, and Bell's work at Malvern consisted of tracing the paths of charged particles through accelerators.’
    • ‘However, as successful as they are in tackling problems such as the origin of mass and the asymmetry between matter and antimatter, accelerators cannot keep achieving higher and higher energies.’
    • ‘The main difference between conventional accelerators and the mobile electron linear accelerator is the type of radiation produced.’
    • ‘Today, accelerators race the particles in straight lines or, to save land space, in ringed paths several miles in diameter.’
    • ‘The particle physics community began adapting existing high-energy accelerators to provide heavy-ion nuclear beams.’
    • ‘Patel and his colleagues heated a sample with far more protons than an accelerator could provide, using a technique developed at Livermore in recent years for other purposes.’
    • ‘Usually, they run around furiously like electrons in a super accelerator, bouncing wide, converging inside, slotting back towards the middle of the park.’
    • ‘Because it takes so much effort to accelerate particles for an experiment, many accelerators have storage rings.’
    • ‘Specializing in accelerators, synchrotron radiation and lasers, each group views these new facilities as a natural development in its respective field.’
    • ‘It's heady material, but the site does a brave job of making the business of elementary particles, accelerators, detectors and collision exercises comprehensible to a general audience.’
    • ‘With stronger dipole magnets, an accelerator can push particles to much higher relativistic energies around the same-sized circular beam path.’
    • ‘As particles travel through an accelerator, they give off a form of radiation known as synchrotron radiation.’
    • ‘Not only do condensed matter physicists use accelerators, but particle physicists use superconductors and solid-state detectors.’
    • ‘To study subatomic particles, physicists build giant accelerators that smash the particles together.’
    • ‘Very soon, accelerators at Ernest Lawrence's Berkeley laboratory were producing artificial pions; the era of high-energy physics had begun.’
    • ‘Very early in the study of high-energy physics the only source of high energy particles was in cosmic rays (the first accelerators were not yet in existence).’
    1. 3.1Chemistry A substance that speeds up a chemical process.
      • ‘Contact dermatitis is one example, in which the skin responds to allergens such as nickel and rubber accelerators.’
      • ‘The allergic reactions are caused by the presence of residual chemicals, such as accelerators belonging to types of thiuram, thiazoles, and carbonates, which often are used in the manufacture of both latex and synthetic gloves.’
      • ‘The process uses organic peroxides that do not rely on any accelerators.’
      • ‘Quick Compost is the only liquid accelerator on the market.’
      • ‘Additionally, products such as tanning oils and tan accelerators are made to promote tanning.’
      • ‘This causes scission of an initiator molecule which produces free radicals in the presence of an aliphatic amine accelerator.’
      • ‘Related supplies include a compost accelerator for $6.99 to speed up the process and a compost turner for $9.99.’
      • ‘Chemical admixtures such as superplasticizers, accelerators, antifreezers, air entraining agents and many others are used to modify the grout properties and protect it from the environmental conditions.’
      • ‘Consequently, a traditional cyanoacrylate adhesive might be selected and used in conjunction with an accelerator in an effort to speed the cure.’
      • ‘Aniline is used in the manufacture of a number of products including dyes, pharmaceuticals, antioxidants, and vulcanization accelerators in rubber compounds.’
      • ‘Symptoms, also caused by rubber accelerators and chemical additives, include redness, itching, crusting, and blisters, resembling the reaction to poison ivy or poison oak.’
      • ‘Other chemicals (eg, accelerators, antioxidants) are added for strength, stretch, and durability.’
      • ‘Sometimes scrubs combine abrasive qualities from these granules with plant-based exfoliant accelerators, such as milk or fruit acids and certain essential oils.’
      • ‘Non-ionic surfactants act as accelerators of diffusion in the cuticular wax barrier.’
      • ‘Calcium chloride or sodium chloride are the most commonly-used accelerators.’
      • ‘We would also use high doses of polycarboxilate high-range water reducer and nonchloride accelerators.’
      • ‘When latex gloves are manufactured, chemicals, curing agents, and accelerators are added to give gloves these desired properties.’
      • ‘What are potential catalysts or accelerators?’
      • ‘Rodinal uses potassium hydroxide as the accelerator and p-aminophenol as the sole developing agent.’
      • ‘You need to mix the cream bleach and powder accelerator together, and I found it easier to do on a saucer than the tiny plastic palette they provide.’