/ Dictionary / Index T tonne: Meaning and Definition of Find definitions for: tonne Pronunciation: (tun), [key] — n. See metric ton. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: tonne (Thesaurus) tonnage deck tonneau Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language