MEANING
A large developing body that may become a planet as it gathers material around a young star.
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Words that belong together
- young protoplanet
- protoplanet formation
On the page
The probe mapped a protoplanet still gathering dust from the surrounding disk.
Nearby words
Word forms
- Base
- protoplanet
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Usage notes
Primary category: sci-fi. Forms: Singular protoplanet; plural protoplanets. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Commonness: moderately common.
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