'Crasis' definitions:

Definition of 'Crasis'

From: GCIDE

Crasis \Cra"sis\ (kr?"s?s), n. [LL., temperament, fr. Gr. ????, fr. ???? to mix.]
1. (Med.) A mixture of constituents, as of the blood; constitution; temperament. [1913 Webster]
2. (Gram.) A contraction of two vowels (as the final and initial vowels of united words) into one long vowel, or into a diphthong; syn[ae]resis; as, cogo for coago. [1913 Webster]