/ Dictionary / Index T trichology: Meaning and Definition of Find definitions for: tri•chol•o•gy Pronunciation: (tri-kol'u-jē), [key] — n. the science dealing with the study of the hair and its diseases. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trichoid trichome Related Content Daily Word Quiz: abominable Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language