Definition of trajectory noun from the Oxford Advanced Learner's Dictionary



BrE BrE//trəˈdʒektəri//
; NAmE NAmE//trəˈdʒektəri//
(pl. trajectories) (specialist)
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the curved path of something that has been fired, hit or thrown into the air a missile’s trajectory (figurative) My career seemed to be on a downward trajectory. Word Originlate 17th cent.: from modern Latin trajectoria (feminine), from Latin traject- ‘thrown across’, from the verb traicere, from trans- ‘across’ + jacere ‘to throw’.
See the Oxford Advanced American Dictionary entry: trajectory