/ Dictionary / Index B baseplate: Meaning and Definition of Find definitions for: base•plate Pronunciation: (bās'plāt"), [key] — n. bedplate. a sheet of plastic material for making trial denture plates. the portion of a denture in contact with the jaw. a plate of metal to be clad with another metal. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. base period base price 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