v. t. [ imp. & p. p. Trajected; p. pr. & vb. n. Trajecting. ] [ L. trajectus, p. p. of trajicere to throw across; trans across + jacere to throw. See Jet a shooting forth. ] To throw or cast through, over, or across; as, to traject the sun's light through three or more cross prisms. [ R. ] Sir I. Newton. [ 1913 Webster ]

n. [ L. trajectus, fr. trajicere: cf. F. trajet, OF. traject. See Traject, v. t. ] 1. A place for passing across; a passage; a ferry. [ Obs. ] Cotgrave. [ 1913 Webster ]

2. The act of trajecting; trajection. [ 1913 Webster ]

3. A trajectory. [ R. ] I. Taylor. [ 1913 Webster ]

n. [ L. trajectio a crossing over, transposition. ] 1. The act of trajecting; a throwing or casting through or across; also, emission. Boyle. [ 1913 Webster ]

2. Transposition. [ R. ] Knatchbull. [ 1913 Webster ]

n.; pl. Trajectories [ Cf. F. trajectoire. ] The curve which a body describes in space, as a planet or comet in its orbit, or stone thrown upward obliquely in the air. [ 1913 Webster ]