planetesimal: Meaning and Definition of


Pronunciation: (plan"i-tes'u-mul), [key]
— Astron. Astron.
  1. one of the small celestial bodies that, according to one theorywere fused together to form the planets of the solar system.
  1. of or pertaining to a planetesimal or planetesimals.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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