/ Dictionary / Index H hair implant: Meaning and Definition of Find definitions for: hair' im"plant Pronunciation: [key] the insertion of synthetic fibers or human hair into the scalp to cover baldness. Cf. hair transplant. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. hair hygrometer hairless Related Content Daily Word Quiz: spectral Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language