differentia

A. All engraving must be cut work;—that is its differentia.

From Ariadne Florentina Six Lectures on Wood and Metal Engraving by John Ruskin

These subjects make explicit dealing with himself difficult, if not impossible: but his differentia as regards them may, with the aid of a little dexterity, be put without offence.

From A History of the French Novel, Vol. 1 From the Beginning to 1800 by George Saintsbury

Genus and differentia are found in every good definition.

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

Egotism is Montaigne’s note, his differentia, in the world of literature.

From French Classics by William Cleaver Wilkinson

Universality not the differentia of aesthetic pleasure, 40 et seq.

From The Sense of Beauty Being the Outlines of Aesthetic Theory by George Santayana

Similarly the differentiae are predicated of the species and of the individuals.

From The Categories by E. M. Edghill

But while none of these twenty or more definitions is logical in the sense just defined, they all present one or other of the differentiae given by those in the text.

From Darwin, and After Darwin, Volume 2 Post-Darwinian Questions: Heredity and Utility by George John Romanes

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

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

From Darwin and Modern Science by A. C. (Albert Charles) Seward

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