/ Dictionary / Index S sunnyside up: Meaning and Definition of Find definitions for: sun'ny•side up' Pronunciation: (sun'ē-sīd"), [key] (of an egg) fried without breaking the yolk or being turned over, with the yolk remaining visible and somewhat liquid inside. Cf. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. sunny side Sunnyvale Related Content Daily Word Quiz: neologism Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language