/ Dictionary / Index F flat-plate collector: Meaning and Definition of Find definitions for: flat'-plate collec'tor Pronunciation: (flat'plāt"), [key] a type of solar collector consisting of a series of flat glass or plastic plates with black metal surfaces that absorb solar energy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. flat-out flat race Related Content Daily Word Quiz: longevity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language