Main Entry:

tra·jec·to·ry

Pronunciation:

\trə-ˈjek-t(ə-)rē\

Function:

noun

Inflected Form(s):

plural tra·jec·to·ries

Etymology:

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

Date:

1696

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>