/ Dictionary / Index S spot plate: Meaning and Definition of Find definitions for: spot' plate" Pronunciation: [key] — Chem. Chem. a flat ceramic or plastic plate containing small wells on which spot tests are made. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. spot pass spot price 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