in medicine, the act of making or preparing chyme. The word comes from χυμος, succus, of χυω, fundo, "I melt." Chymosis, according to some, is the second of the concoctions made in the body; being a repeated preparation of the most impure and grossest parts of the chyle, which being rejected by the lacteals, is imbibed by the mesenterics, and thence carried to the liver, to be there elaborated, purified, and subtilized afresh. It is of this, according to Rogers, that the animal spirits are formed.

CHYMOSIS is also a distention of the eye-lids, arising from an inflammation; also an inflammation of the tunica cornea in the eye.