/ Dictionary / Index M mean sun: Meaning and Definition of Find definitions for: mean' sun' Pronunciation: [key] an imaginary sun moving uniformly in the celestial equator and taking the same time to make its annual circuit as the true sun does in the ecliptic. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. means test meant Related Content Daily Word Quiz: abscond Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language