/ Dictionary / Index P phototherapeutics: Meaning and Definition of Find definitions for: pho•to•ther•a•peu•tics Pronunciation: (fō"tu-ther"u-py'tiks), [key] — n. (used with a sing. v.) the branch of therapeutics that deals with the curative use of light rays. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. phototheodolite phototherapy Related Content Daily Word Quiz: pristine Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language