/ Dictionary / Index T thermal printer: Meaning and Definition of Find definitions for: ther'mal print'er Pronunciation: [key] — Computers. Computers. a printer that produces output by selectively heating a heat-sensitive paper in patterns corresponding to the characters to be produced. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thermal pollution thermal radiation Related Content Daily Word Quiz: wizened Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language