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planetesimal: Meaning and Definition of
plan•e•tes•i•mal
Pronunciation: (plan"i-tes'u-mul), [key]
— Astron. Astron.
- one of the small celestial bodies that, according to one theorywere fused together to form the planets of the solar system.
- of or pertaining to a planetesimal or planetesimals.
See also:
- planetesimal (Thesaurus)
