momentum
C1Formal, Academic, Business, Technical
Definition
Meaning
The quantity of motion of a moving body, measured as a product of its mass and velocity. In a broader sense, the impetus gained by a moving object or by a developing process.
The ability to continue growing, developing, or being successful; the force or strength of a process or movement that increases over time.
Linguistics
Semantic Notes
The term bridges physical science (physics) and abstract/metaphorical usage (e.g., in business, politics, sports). The metaphorical sense dominates general usage.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or spelling. Minor preference in collocations; e.g., 'gain momentum' is universal, but 'build momentum' might be slightly more frequent in American English.
Connotations
Equally positive in both dialects when referring to progress. In physics context, strictly neutral.
Frequency
Equally common in both varieties, with high frequency in business, news, and academic (physics, social sciences) contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
The campaign has momentum.The project gained momentum after the funding was secured.They are trying to maintain the momentum of the reforms.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “A rolling stone gathers no moss. (Related concept of gaining momentum through activity)”
- “Keep the ball rolling. (Maintain momentum)”
Usage
Context Usage
Business
Refers to sustained progress in sales, market share, or project development. 'We need to capitalise on our current momentum.'
Academic
In physics: a precise vector quantity (p=mv). In social sciences: the increasing rate of adoption of an idea or social movement.
Everyday
Often used in sports commentary ('The team has the momentum now') or personal projects ('I've lost my momentum on this task').
Technical
Physics: a conserved quantity in a closed system. Engineering: relating to the force of moving parts.
Examples
By Part of Speech
verb
British English
- The campaign momentumed forward after the debate. (RARE/NON-STANDARD)
American English
- (No standard verb form. 'Gain/build momentum' is used instead.)
adverb
British English
- (No standard adverb form.)
American English
- (No standard adverb form.)
adjective
British English
- Momentum-based trading strategies are common. (Technical)
American English
- The momentum indicator flashed a buy signal. (Finance)
Examples
By CEFR Level
- The ball lost momentum and stopped rolling.
- The team played better in the second half and gained momentum.
- The political movement gathered momentum after the scandal was revealed.
- Conservation of angular momentum is a fundamental principle in classical mechanics.
Learning
Memory Aids
Mnemonic
Think of a MOMENTum: it's the force something has in a specific MOMENT of its motion, and if it keeps it up, it can achieve great things.
Conceptual Metaphor
PROGRESS IS FORWARD MOTION / SUCCESS IS A MOVING OBJECT.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating directly as 'момент' (which only means 'a point in time'). The correct direct physics term is 'импульс'. For the common metaphorical sense, use 'динамика', 'инерция', or phrases like 'набрать обороты'.
Common Mistakes
- Using 'momentum' to mean 'an important moment' (e.g., 'a historic momentum'). Confusing with 'moment'. Using as a countable noun incorrectly (usually uncountable).
Practice
Quiz
In which context is 'momentum' used in its primary, literal sense?
FAQ
Frequently Asked Questions
It is almost always uncountable. You do not say 'a momentum' or 'momentums'. You can have 'a lot of momentum' or 'some momentum'.
'Impetus' is the initial push or stimulus that starts motion or progress. 'Momentum' is the continuing motion or progress *after* it has started. An impetus creates momentum.
In physics, momentum is a vector and can be negative relative to a direction. In metaphorical use, it is almost always positive (e.g., 'negative momentum' is rare and would mean progress is reversing). You 'lose' or 'run out of' momentum instead.
Use it to describe the sustained progress of a project, sales trend, or market movement. E.g., 'Q2 results show strong momentum, which we expect to continue into Q3.'