differentia

[ dif-uh-ren-shee-uh, -shuh ]
/ ˌdɪf əˈrɛn ʃi ə, -ʃə /

noun, plural dif·fer·en·ti·ae [dif-uh-ren-shee-ee] /ˌdɪf əˈrɛn ʃiˌi/.

the character or attribute by which one species is distinguished from all others of the same genus.
the character or basic factor by which one entity is distinguished from another.

Origin of differentia

From Latin, dating back to 1820–30; see origin at difference
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for differentia

differentia

/ (ˌdɪfəˈrɛnʃɪə) /

noun plural -tiae (-ʃɪˌiː)

logic a feature by which two subclasses of the same class of named objects can be distinguishedAlso called: difference

Word Origin for differentia

C19: from Latin: diversity, difference
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