/ Dictionary / Index T tyrosinosis: Meaning and Definition of Find definitions for: ty•ro•sin•o•sis Pronunciation: (tī"rō-si-nō'sis, tir"ō-), [key] — n. Pathol. a condition characterized by abnormally large amounts of tyrosine in the urine, caused by faulty metabolism. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. tyrosinemia Tyrr Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language