planetoid
构词拆解
- -oid
- Resembling; having the likeness of (usually including the concept of not being the same despite the likeness, but counterexamples exist). · (less commonly) Of, pertaining to, or related to.
词源说明
释义
名词noun
- 1(astronomy, dated) An asteroid of any size
- 2(astronomy, dated) An asteroid-like body in an orbit beyond the asteroid belt, such as a centaur or Kuiper belt object
- 3(astronomy) A larger, planetary, body in orbit around the Sun, such as Vesta or (candidate) dwarf planets such