/ Dictionary / Index S soli-: Meaning and Definition of Find definitions for: soli- Pronunciation: [key] a combining form meaning “alone,” “solitary,” used in the formation of compound words: solifidian. soli- Pronunciation: [key] a combining form meaning “sun,” used in the formation of compound words: soliform. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: soli- (Thesaurus) solgel solicit Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language