First Known Use: 1696
Dictionary
trajectory
noun tra·jec·to·ry \trə-ˈjek-t(ə-)rē\
: the curved path along which something (such as a rocket) moves through the air or through space
plural tra·jec·to·ries
Full Definition of TRAJECTORY
1
: the curve that a body (as a planet or comet in its orbit or a rocket) describes in space
2
: a path, progression, or line of development resembling a physical trajectory <an upward career trajectory>
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Origin of TRAJECTORY
New Latin trajectoria, from feminine of trajectorius of passing, from Latin traicere to cause to cross, cross, from trans-, tra- trans- + jacere to throw — more at jet
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