/ Dictionary / Index T thyrosis: Meaning and Definition of Find definitions for: thy•ro•sis Pronunciation: (thī-rō'sis), [key] — n. any condition resulting from abnormal functioning of the thyroid gland. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. thyroid-stimulating hormone thyrotome Related Content Daily Word Quiz: soporific Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language