Planetesimals

noun

noun ·Rare ·Advanced level

Definitions

Noun

1
plural of planetesimal form-of, plural

Synonyms

astral astronomic astronomical astrophysical galactic heavenly

Example

"Particles in the disk clump together, forming planetesimals, which then collide with each other, building up to form the planets."

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.