trajectory - Master This Word
Master this word with our 5-step learning method – Learn English in English
trajectory Word Meanings
- the path followed by a moving object
- a course or direction in life or development
- the path of an object in relation to a force
trajectory Example Sentences
Example sentences are the start of understanding. Don't rush to memorize. First feel how the word works in a sentence.
trajectory Phonetic & Pronunciation
UK
/trəˈd͡ʒɛk.tə.ri/
US
/trəˈd͡ʒɛk.tʃə.ri/
trajectory Word Etymology
from Latin 'trajectoria' (from 'traicere' = to throw across) → Old French → English. Imagine an arc made by a thrown object, symbolizing its flight through space.
Note 1: These definitions and etymologies are not standard dictionary definitions, but extended explanations provided to help with memorization and understanding of the actual application of words. Through this background information, we strive to make words more vivid and easier to understand, and help you remember their meanings in real life.
Note 2: LexiTalk designs the learning flow around the linguistics principle of “Comprehensible Input.” When learners encounter material that is slightly above their level but still understandable from context, the brain naturally absorbs the language. That’s why we keep every word inside authentic contexts, using examples and associations to help you understand it and use it flexibly.
Read the FAQ explanation of Comprehensible InputReal Context
Trajectory is the path followed by a moving object, especially the curve it traces under the influence of forces. In physics, it’s the actual route of travel, not merely the starting point or destination. In everyday language, trajectory often refers to the course of someone’s life or career, implying direction and progression over time. The term captures both shape and course, so you can talk about a rocket’s trajectory, the trajectory of a ball after being kicked, or a person’s career trajectory. Etymology: from Latin trajectoria via Old French into English, with the idea of throwing an object across space and watching its arc.
Usage Reminders
- Use trajectory for the curved path of motion; not every path is a trajectory. Distinguish physical trajectory from metaphorical career trajectory. Say ‘the trajectory of the rocket’ rather than ‘the rocket’s path’ when you want a technical tone. Pair with following/plotting: follow a trajectory, plot a trajectory, trace the trajectory. In life contexts, think of direction over time, not a single event. Remember the Latin root and the arc imagery.
Common Misconceptions
- Trajectory is not the same as distance or length; it is the path taken, not how long it is.
- A straight line is a trajectory only if the motion is straight; many trajectories are curved.
- Do not mix up trajectory with velocity or acceleration; they describe motion differently.
- In everyday speech, 'career trajectory' sounds more natural than 'career path' in some contexts, but both are common.
- Assume trajectory always implies a future outcome; it can describe present or past motion as well.
Thinking Differences
Explain to an English speaker (meta, keep short)
Learning Tips
- Learn common collocations: trajectory of a rocket, career trajectory.
- Distinguish physical trajectory (arc) from figurative usage (life/career).
- Practice with verbs: follow a trajectory, plot a trajectory, trace the trajectory.
- Notice prepositions: the trajectory of something/someone.
- Compare with related words: path, route, course to keep nuance clear.
- Use visuals or graphs to map a trajectory when talking about motion.
5-Step Learning Method - Learn English in English
Step 1: Meaning
What is the meaning of 'trajectory'?
A.A mathematical equation
B.A type of bird
C.Path of an object through space
D.A type of flower
Step 2: Usage
In which of the following sentences is 'trajectory' used correctly?
A.I trajectory to see you tomorrow.
B.He gave her a beautiful trajectory as a gift.
C.The trajectory of the car was delicious.
D.She watched the bird fly in a peculiar trajectory.
Step 3: Similar Words
Which word is a synonym for 'trajectory'?
A.Route
B.Divergence
C.Stagnation
D.Detour
Step 4: Opposite Words
What is the opposite of 'trajectory'?
A.Stagnation
B.Motionless
C.Standstill
D.Stillness
Step 5: Mastery
In what real-life context would you hear the term 'trajectory'?
A.Art class exploring color theory
B.Cooking class learning about baking
C.Dance class practicing choreography
D.Physics class discussing projectile motion
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