protoplanet
/ˈprəʊtəʊˌplanɪt
/noun Astronomy
A large body of matter in orbit around the sun or a star and thought to be developing into a planet: this analysis supported the view that the moon originated from a glancing collision between the earth and another protoplanet 4,500 million years ago...
- Learning more about the protoplanet won't be fast or easy.
- The protoplanet candidate orbits about 70 times further from its star than Earth does from the Sun.
- It isn't clear how the latest suspected protoplanet is being formed.
Origin
1940s: from proto- + planet.
- be fresh out of
- befriend
- be frightened of one's shadow
- be frightened (or scared) out of one's wits
- befuddle
- befuddlement
- be full bottle on
- be full of it
- be full of the joys of spring
- befurred
- beg
- begad
- began
- begat
- begemmed
- beget
- be/get carried away
- be/get liquored up
- begetter
- beggar
- beggar belief (or description)
- beggarliness
- beggarly
- beggarman
- beggar-my-neighbour