/ Dictionary / Index T tremissis: Meaning and Definition of Find definitions for: tre•mis•sis Pronunciation: (tri-mis'is), [key] — pl. -mis•ses Also called triens. a gold coin of the Eastern Roman Empire, the third part of a solidus, first issued in the 3rd century a.d. a Merovingian gold coin imitating this. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. trémie tremolant 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