precession
英 [prɪ'seʃ(ə)n]
美[prɪ'sɛʃən]
- n. 岁差（等于precession of the equinoxes）；先行；优先
英英释意
- 1. the motion of a spinning body (as a top) in which it wobbles so that the axis of rotation sweeps out a cone
- 2. the act of preceding in time or order or rank (as in a ceremony)