acceleration
C1Formal, Technical
Definition
Meaning
The rate at which the velocity of an object increases over time; a process of becoming faster.
An increase in the rate, pace, or progress of any process or phenomenon, often implying a sudden or rapid change.
Linguistics
Semantic Notes
In physics, the term has a precise mathematical definition (change in velocity per unit time). In general use, it often implies a positive, desirable increase in speed or progress, though it can also suggest a loss of control. It is a nominalisation of the verb 'accelerate'.
Dialectal Variation
British vs American Usage
Differences
No significant lexical differences. Spelling is identical. The derived adjective 'accelerative' is more common in American technical writing, while 'acceleratory' is occasionally used in British contexts, though rare.
Connotations
Slightly more technical connotation in UK English in everyday contexts (e.g., more likely associated with cars/physics). In US English, also common in business contexts (e.g., 'growth acceleration').
Frequency
Similar high frequency in academic and technical domains. Slightly higher frequency in US business media.
Vocabulary
Collocations
Grammar
Valency Patterns
acceleration of [NP]acceleration in [NP][ADJ] accelerationVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “put your foot on the acceleration”
- “go into acceleration mode (business)”
Usage
Context Usage
Business
Refers to a rapid increase in growth, sales, or market share. E.g., 'The new strategy led to an acceleration in revenue.'
Academic
Primarily used in physics and engineering with precise meaning; also in economics and social sciences to describe rates of change.
Everyday
Most commonly used in relation to vehicles and sports. E.g., 'The car's acceleration is impressive.'
Technical
A vector quantity in physics measured in m/s². Central to mechanics, dynamics, and automotive engineering.
Examples
By Part of Speech
verb
British English
- The driver accelerated rapidly away from the lights.
- The government is being urged to accelerate the vaccination programme.
American English
- He accelerated to merge onto the highway.
- We need to accelerate our timeline for the product launch.
adverb
British English
- The car moved acceleratingly, but this form is extremely rare.
- The situation deteriorated acceleratingly (highly formal/rare).
American English
- The market grew acceleratingly in the last quarter (rare).
- Rarely used; 'in an accelerating manner' is more common.
adjective
British English
- The accelerating pace of change is concerning.
- She felt an accelerating sense of panic.
American English
- The accelerating costs forced a budget review.
- He experienced accelerating heart rate during the test.
Examples
By CEFR Level
- The bus has good acceleration.
- I felt the acceleration when the train started moving.
- The new sports car is famous for its incredible acceleration.
- There has been an acceleration in house prices this year.
- The acceleration of climate change is a major global concern.
- During the experiment, we measured the constant acceleration of the falling object.
- The sudden acceleration of inflation has taken economists by surprise.
- Proper technique is crucial to maximise acceleration out of the starting blocks.
Learning
Memory Aids
Mnemonic
Think of a car's ACCELERATOR pedal. Pressing it causes ACCELERATION. Both words share 'accel-'.
Conceptual Metaphor
PROGRESS IS FORWARD MOTION / CHANGE IS MOTION. Therefore, 'acceleration' metaphorically represents any rapid increase in the pace of change.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'акселерация' (false friend, relates to biological/developmental speed).
- The correct general translation is 'ускорение'.
- In business contexts, 'наращивание темпов' might be more idiomatic than a direct translation.
Common Mistakes
- Misspelling as 'acceration' or 'aceleration'.
- Using 'speed' interchangeably (speed is rate of motion; acceleration is rate of change of speed).
- Incorrect preposition: 'acceleration *of* demand' (correct) vs. 'acceleration *in* the process' (correct).
Practice
Quiz
In which context is the word 'acceleration' used with its most precise, technical meaning?
FAQ
Frequently Asked Questions
In physics, acceleration is a vector and can be positive (speeding up) or negative (slowing down, often called deceleration). In general use, it usually implies an increase.
Speed is how fast something is moving (e.g., 50 km/h). Acceleration is how quickly that speed is changing (e.g., increasing from 50 to 80 km/h in 3 seconds).
Yes, it is commonly used metaphorically in economics, business, and social sciences (e.g., 'acceleration of digital transformation', 'acceleration in learning').
The most common and correct adjective is 'accelerating' (e.g., accelerating growth). 'Accelerative' is a less common alternative, mainly in technical writing.