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Webster 1913 Edition

Noun.

;

pl.

Trajectories

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[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.

Noun.

The orbit of a comet; the path described by a comet in its motion, which Dr. Halley supposes to be elliptical.