Fr.: trajectoire balistique
A curved path followed by an unpowered object that is being acted upon only by gravitational forces and the friction of the medium through which it moves.
Fr.: trajectoire isogonale
Math.: A curve which intersects every member of a given one-parameter family of curves at one and the same angle.
Fr.: trajectoire orthogonale
Math.: An → isogonal trajectory where the family of curves are cut at right angles.
Physics: The line or curve described by an object moving through space.
From Mod.L. trajectoria, from feminine of trajectorius "of or pertaining to throwing across," from L. trajectus "thrown over or across," p.p. of trajicere "throw across," from L. → trans- "across" + icere, combining form of jacere "to throw," → eject.