/ Dictionary / Index T Thayer: Meaning and Definition of Find definitions for: Thay•er Pronunciation: (thā'ur, thâr), [key] — n. 1785–1872, U.S. army officer and educator. 1859–1923, U.S. historian and author. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Thaxter Th.B. Related Content Daily Word Quiz: agitated Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language