Id`i*o*syn"cra*sy (?), n.; pl. Idiosyncrasies (#). [Gr. ; proper, peculiar + a mixing together, fr. to mix together; with + to mix: cf. F. idiosyncrasie. See Idiom, and Crasis.]

A peculiarity of physical or mental constitution or temperament; a characteristic belonging to, and distinguishing, an individual; characteristic susceptibility; idiocrasy; eccentricity.

The individual mind . . . takes its tone from the idiosyncrasies of the body. I. Taylor.

 

© Webster 1913.