trajectory
C1Formal, Academic, Technical
Definition
Meaning
The curved path that an object follows through space after it is launched, thrown, or projected, especially under the influence of forces like gravity.
The development or course of a process, event, or career over a period of time.
Linguistics
Semantic Notes
The word combines the concrete, physical sense (e.g., a missile's path) with a highly productive abstract/metaphorical sense (e.g., career trajectory). The abstract sense implies a directed, often plotted, course of development.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling and pronunciation follow standard UK/US conventions.
Connotations
Equally used in both technical (physics, engineering) and figurative (social sciences, business) contexts in both varieties.
Frequency
Slightly higher frequency in American English in business/career contexts, but the difference is minimal.
Vocabulary
Collocations
Grammar
Valency Patterns
[subject] + [verb] + on a + [adjective] + trajectoryThe trajectory of + [noun phrase]to plot/calculate/determine the trajectoryVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “on a collision trajectory (with)”
- “to alter the trajectory of something”
Usage
Context Usage
Business
Used to describe the projected growth or decline of a company, product, or an individual's career. (e.g., 'The startup is on a steep upward trajectory.')
Academic
Common in physics, mathematics, engineering, and social sciences to describe plotted paths or developmental courses. (e.g., 'The study tracked the educational trajectories of the participants.')
Everyday
Less common in casual conversation. Used when discussing career paths, life courses, or the path of thrown objects in a semi-formal way.
Technical
The precise calculated path of a projectile, celestial body, or particle under given forces. (e.g., 'The software simulates the missile's trajectory.')
Examples
By Part of Speech
verb
British English
- N/A. The verb form is not standard. Use 'to plot a trajectory' or 'to follow a trajectory'.
American English
- N/A. The verb form is not standard. Use 'to project a trajectory' or 'to be on a trajectory'.
adverb
British English
- N/A. There is no standard adverbial form derived from 'trajectory'.
American English
- N/A. There is no standard adverbial form derived from 'trajectory'.
adjective
British English
- The trajectory data was crucial for the mission.
- We need a trajectory analysis.
American English
- The trajectory calculations were off.
- She reviewed the trajectory model.
Examples
By CEFR Level
- The ball had a high trajectory.
- His career trajectory has been impressive, moving from intern to manager in three years.
- The rocket's trajectory was visible in the night sky.
- If we continue on our current trajectory, we will exceed our annual targets by Q3.
- Economists are trying to predict the trajectory of inflation.
- The central bank's intervention altered the trajectory of the economic crisis.
- Her research focuses on the divergent life trajectories of individuals from similar backgrounds.
Learning
Memory Aids
Mnemonic
Think of a PROJECTor throwing an image on a screen. TRAJECTORY is the path that something (like a projectile) is thrown ("ject") across ("tra-") space.
Conceptual Metaphor
LIFE/SUCCESS IS A JOURNEY ALONG A PATH; PROGRESS IS FORWARD MOTION ALONG A PREDETERMINED LINE.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid confusing with "траектория," which is a direct cognate and correct for the physical path. However, for abstract uses like 'career trajectory,' Russian might prefer "траектория карьеры" (formal) or more naturally "путь развития," "карьерный рост," or "динамика." Overusing the cognate in all abstract contexts can sound unnatural.
Common Mistakes
- Misspelling as 'trajecotry' or 'trajectery'.
- Using it as a verb (e.g., 'to trajectory' is incorrect).
- Confusing with 'trend' when implying a calculated or inevitable path.
Practice
Quiz
In which context is the word 'trajectory' LEAST appropriate?
FAQ
Frequently Asked Questions
Yes, in its abstract sense. It's commonly used for intangible things like careers, economies, or learning, implying a directed course of change or development over time.
'Trajectory' often implies a calculated, plotted, or predicted course, especially one influenced by external forces (like gravity or market conditions). 'Path' is more general and neutral.
It is common but can be considered slightly redundant, as a trajectory inherently implies a forward path. 'Projected trajectory' or 'expected trajectory' are more precise alternatives.
Absolutely. Phrases like 'downward trajectory,' 'negative trajectory,' or 'trajectory of decline' are standard, describing a worsening course of events.