/ Dictionary / Index A apocenter: Meaning and Definition of Find definitions for: ap•o•cen•ter Pronunciation: (ap'u-sen"tur), [key] — n. Astron. the point in the orbit of a heavenly body farthest from a primary other than the earth or the sun. Cf. pericenter. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. apocatastasis apochromatic Related Content Daily Word Quiz: feline Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language