Breadcrumb Home > Dictionary > Index T TM: Meaning and Definition of Find definitions for: TM Pronunciation: [key] trademark. See Tm Pronunciation: [key] — Symbol, Chem. thulium. t.m. Pronunciation: [key] true mean. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tm (Thesaurus) T lymphocyte T-man TrendingHere are the facts and trivia that people are buzzing about. Who's Who in the "Lord of the Rings" Roman Catholic Church Hierarchy Current Events This Week: March 2023 42 Top Western Movie Quotes Slaves in the Family User's Guide to Environmental Language ✖ Related Content Daily Word Quiz: tangential Analogy of the Day: Today’s Analogy Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language