/ Dictionary / Index S scoto-: Meaning and Definition of Find definitions for: scoto- Pronunciation: [key] a combining form meaning “darkness,” used in the formation of compound words: scotoma. Scoto- Pronunciation: [key] a combining form representingorin compound words: Scoto-Irish. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Scotland Yard scotoma Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language