Trajectory



GRE Barron

解释

GRE 红宝书

• n. ( 抛射物) 弹道轨道
• ［英］ n. ( 抛射物) 弹道轨道 ( the curve that a body describes in space)
• ［记］ tra ( 横向) +ject ( 扔) +ory

Webster Collegiate

noun (plural -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>

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