[dih-fin-ee-uh nz]

noun, plural de·fin·i·en·tia [dih-fin-ee-en-shuh, -shee-uh] /dɪˌfɪn iˈɛn ʃə, -ʃi ə/.

something that defines, especially the defining part of a dictionary entry.
Logic. an expression in terms of which another may be adequately defined.

Compare definiendum.

Origin of definiens

1870–75; < Latin dēfīniēns, present participle of dēfīnīre; see define Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for definiens


noun plural definientia (dɪˌfɪnɪˈɛnʃə)

the word or words used to define or give an account of the meaning of another word, as in a dictionary entryCompare definiendum

Word Origin for definiens

Latin: defining
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012