Pus

(pŭs.) [L.] (Physiol.) The white or yellowish matter i uing from a sore, which usually precedes the healing; and in such cases is termed healthy or good pus. Examined in a microscope, it is found to consist of globules, and a transparent colorle fluid. Its specific gravity is greater than that of water; exposed to heat, it evaporates to dryne , but does not coagulate. [s. 743]