Definition of planetesimal Planetesimal
plan•e•tes•i•mal
We found 4 definitions of planetesimal from 4 different sources.
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What does planetesimal mean?
WordNet
NounPlural: planetesimals |
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| planetesimal - one of many small solid celestial bodies thought to have existed at an early stage in the development of the solar system |
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Wiktionary 
- planetesimal (Noun)
Any of many small, solid astronomical objects, that orbit a star and form protoplanets through mutual gravitational attraction.
Wikipedia 
- Planetesimals are small, solid objects thought to exist in protoplanetary disks around a young or forming star.
Part of speech
🔤- planetesimal, noun, singular of planetesimals.
