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trajectory

tra·jec·to·ry [ trə jéktəree ] (plural tra·jec·to·ries)


noun 
Definition:
 
1. path of flying object: the path that a projectile makes through space under the action of given forces such as thrust, wind, and gravity

2. curve intersecting at constant angle: a curve or surface that intersects all of a family of curves or surfaces at a constant angle

3. path of process or event: the way in which a process or event develops over a period of time

[Late 17th century. < medieval Latin trajectorius "relating to throwing across" < Latin trajicere "throw across, pass through" < trans- "across, over" + jacere "to throw"]
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