differentia

The formation of such rules, resting as it does on the power of framing and applying general conceptions, is the prime differentia of human morality from animal behavior.

From Introduction to the Science of Sociology by Robert Ezra Park

The differentia is that part of a definition which names the difference between the term defined and the general class to which it belongs.

From English: Composition and Literature by W. F. (William Franklin) Webster

Genus and differentia are found in every good definition.

From English: Composition and Literature by W. F. (William Franklin) Webster

It has also been called by some the differentia numerica, and by Scotists the haecceitas.

From Ontology or the Theory of Being by Peter Coffey

It would be difficult to find a stronger differentia from the work of the mere playwright, who invariably thinks first of the temporary conditions of success, and accordingly loses the success which is not temporary.

From A History of Elizabethan Literature by George Saintsbury

The Vicar, you must understand, had done his best to inculcate the recognised differentiae of a gentleman.

From The Wonderful Visit by H. G. (Herbert George) Wells

All people can see this; but not all people can see further, or define the differentiae.

From Thoughts on Religion by Charles Gore

It is the mark of substances and of differentiae that, in all propositions of which they form the predicate, they are predicated univocally.

From The Categories by E. M. Edghill

But it is also essential to the understanding of this thesis that the differentiae of the hereditary factor should be clearly grasped.

From Evolution in Modern Thought by August Weismann

After all, what are the chief differentiae between man and the brute creation but that he clothes himself, that he cooks his food, that he uses articulate speech?

From On the Art of Writing Lectures delivered in the University of Cambridge 1913-1914 by Sir Arthur Thomas Quiller-Couch