/ Dictionary / Index A aplanetic: Meaning and Definition of Find definitions for: a•pla•net•ic Pronunciation: (ā"plu-net'ik), [key] — adj. Biol. having no motility. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aplanatic aplanogamete Related Content Daily Word Quiz: miscreant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language