trajectory

noun

tra·​jec·​to·​ry trə-ˈjek-t(ə-)rē How to pronounce trajectory (audio)
plural trajectories
1
: the curve that a body (such as a planet or comet in its orbit or a rocket) describes in space
2
: a path, progression, or line of development resembling a physical trajectory
an upward career trajectory

Did you know?

Formed with part of the prefix trans-, "across", trajectory means a "hurling across". By calculating the effect of gravity and other forces, the trajectory of an object launched into space at a known speed can be computed precisely. Missiles stand a chance of hitting their target only if their trajectory has been plotted accurately. The word is used most often in physics and engineering, but not always; we can also say, for example, that the trajectory of a whole life may be set in a person's youth, or that a new book traces the long trajectory of the French empire.

Examples of trajectory in a Sentence

the trajectory of the missile
Recent Examples on the Web That’s not a good trajectory, and neither is ChatGPT’s user numbers. Bryan Walsh, Vox, 6 Aug. 2024 Many aspiring executives mistakenly view their rise to the C-suite as a linear upward trajectory and, as a result, are too focused on reporting lines and labels. Ruth Umoh, Fortune, 5 Aug. 2024 Besides California, the states labeled as being on a stable or uncertain COVID trajectory were Arizona, Connecticut, Florida, Idaho, Maine and Pennsylvania. Rong-Gong Lin Ii, Los Angeles Times, 5 Aug. 2024 So this month is the perfect opportunity to try something different in order to allow the trajectory of your life to shift once and for all. Meghan Rose, Glamour, 1 Aug. 2024 See all Example Sentences for trajectory 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'trajectory.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

New Latin trajectoria, from feminine of trajectorius of passing, from Latin traicere to cause to cross, cross, from trans-, tra- trans- + jacere to throw — more at jet

First Known Use

1696, in the meaning defined at sense 1

Time Traveler
The first known use of trajectory was in 1696

Dictionary Entries Near trajectory

Cite this Entry

“Trajectory.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/trajectory. Accessed 19 Aug. 2024.

Kids Definition

trajectory

noun
tra·​jec·​to·​ry trə-ˈjek-t(ə-)rē How to pronounce trajectory (audio)
plural trajectories
: the curve that a body (as a planet in its orbit or a rocket) travels along in space
Last Updated: - Updated example sentences
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