planetoid
US /ˈplæn.ɪ.tɔɪd/
UK /ˈplæn.ɪ.tɔɪd/
名詞
小行星, 類行星
a celestial body that is too small to be considered a planet but too large to be classified as a meteoroid; an asteroid
範例:
•
The asteroid belt contains numerous planetoids.
小行星帶包含許多小行星。
•
Scientists are studying a newly discovered planetoid.
科學家正在研究一顆新發現的小行星。