Pronunciation: (di-fin'ē-unz), [key]
—pl. de•fin•i•en•tiaPronunciation: (di-fin"ē-en'shu, -shē-u). [key]
1. something that defines, esp. the defining part of a dictionary entry.
2. Logic.an expression in terms of which another may be adequately defined. Cf. definiendum.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.