n. pl. tra·jec·to·ries 1. a. The path of a projectile or other moving body through space. b. A chosen or taken course: "What died with [the assassinated leaders] was a moral trajectory, a style of aspiration" (Lance Morrow). 2. Mathematics A curve that cuts all of a given family of curves or surfaces at the same angle. [New Latin trāiectōria, from Latin trāiectus, past participle of trāicere, to throw across; see TRAJECT.] |
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