Definition of planetoid in English:
Another term for asteroid.
- Most of these are in stable orbits around the Sun and are really just small planets, or planetoids.
- It is from these exchanges that Earth finally begins to establish colonies on other planets (and planetoids besides the moon) in order to deal with its overwhelming population.
- This shorter rotation period is typical of planetoids in our solar system, requiring no external influences to explain.
Definition of planetoid in:
- US English dictionary