Pronunciation: (di-tûr'mu-nā"tiv, -nu-tiv), [key]
serving to determine; determining.
1. something that determines.
2. a graphic symbol used in ideographic writing to denote a semantic class and written next to a word to indicate in what semantic category that word is to be understood, thus at times distinguishing homographs.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.