/ Dictionary / Index S separation layer: Meaning and Definition of Find definitions for: separa'tion lay"er Pronunciation: [key] — Bot. Bot. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. separationist separation negative Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language