accelerator
B2Neutral to Technical (depending on context)
Definition
Meaning
A device (typically a pedal) used to increase the speed of a vehicle.
1. A thing or person that causes a process or activity to happen or develop more quickly. 2. (Physics) A machine that increases the kinetic energy of charged particles. 3. (Business/Economics) A program that helps startups develop rapidly. 4. (Chemistry) A substance that increases the rate of a chemical reaction.
Linguistics
Semantic Notes
The primary sense relates to vehicles. In technical contexts (physics, chemistry, computing), it is a compound noun (e.g., particle accelerator). The business sense (startup accelerator) is a recent metaphorical extension.
Dialectal Variation
British vs American Usage
Differences
The vehicle part is universally 'accelerator'. 'Gas pedal' is the predominant everyday term in AmE, though 'accelerator' is understood and used in technical/more formal contexts. 'Throttle' is sometimes used interchangeably in both varieties, but is technically the mechanism controlling fuel/air flow.
Connotations
In BrE, 'accelerator' is the standard, neutral term for the pedal. In AmE casual speech, 'gas pedal' is more common, while 'accelerator' can sound slightly more formal or technical.
Frequency
'Accelerator' is high-frequency in BrE for vehicles. In AmE, 'gas pedal' is higher frequency in everyday speech, but 'accelerator' remains high in technical, educational, and formal writing.
Vocabulary
Collocations
Grammar
Valency Patterns
N of N (accelerator of growth)N for N (an accelerator for startups)Adj + N (linear accelerator)V + the + N (press the accelerator)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “Put the pedal to the metal (related idiom emphasizing rapid acceleration)”
- “Step on it (related imperative meaning 'go faster')”
Usage
Context Usage
Business
A startup accelerator provides funding, mentorship, and office space to help new companies grow quickly.
Academic
The large hadron collider is the world's most powerful particle accelerator.
Everyday
He pressed the accelerator too hard and the car shot forward.
Technical
The vulcanization process uses a chemical accelerator to speed up the curing of rubber.
Examples
By CEFR Level
- To go faster, press the accelerator with your foot.
- The car is not moving because you are not pressing the accelerator.
- She slowly released the accelerator as she approached the red light.
- The startup joined a three-month business accelerator in London.
- The driver slammed his foot down on the accelerator to overtake the lorry.
- Researchers at the university use a particle accelerator to study atomic structures.
- The new policy is intended to act as an economic accelerator, stimulating growth in key sectors.
- Vulcanization accelerators are crucial additives that modify the kinetics of the rubber curing process.
Learning
Memory Aids
Mnemonic
Think of ACCELERATOR in a car: it makes you go FASTER, and it ACCELERATES your speed. Both words start with 'ACCELE-'.
Conceptual Metaphor
SPEED IS PROGRESS / GROWTH IS A JOURNEY (e.g., 'a business accelerator', 'accelerating the development process').
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct translation with 'акселератор' for the car part; the Russian term is 'педаль газа'. 'Акселератор' is used in computing/physics.
- The business term 'accelerator' is often translated as 'акселератор', creating a potential false friend with the car term in English.
Common Mistakes
- *He pressed the accelerator of the car. (Unnecessary 'of the car') -> He pressed the accelerator. / He pressed the car's accelerator.
- Using 'accelerator' for the brake/clutch pedal.
- In AmE, overusing 'accelerator' in casual conversation where 'gas pedal' is more natural.
Practice
Quiz
In which context does 'accelerator' NOT typically refer to a physical pedal?
FAQ
Frequently Asked Questions
Yes, it is the correct technical term in both varieties. However, in everyday American English, 'gas pedal' is far more common.
An incubator nurtures very early-stage business ideas, often over a longer period. An accelerator focuses on speeding up the growth of already-established startups through intensive, short-term programs, usually in exchange for equity.
No, 'accelerator' is solely a noun. The related verb is 'accelerate'.
A particle accelerator uses electromagnetic fields to propel charged particles (like protons or electrons) to very high speeds and energies, colliding them to study fundamental physics, create new particles, or for medical/industrial applications.
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