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Meaning of tremissis

tre•mis•sis

Pronunciation: (tri-mis'is), [key]
— pl. -mis•ses
  1. 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.
  2. a Merovingian gold coin imitating this.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.