preplanetary
preplanetary1词源 1
构词拆解
- pre-
- Before; physically in front of. · Before; earlier in time; beforehand.
词源说明
释义
同族词
preplanetary2词源 2
词源说明
From preplanetary nebula, from pre- + planetary nebula.
释义
形容词adjective
- 1Relating to a stage in the life of a red giant star or its preplanetary nebula during the star's final stages of life