Sor´des. The dark brown matter which collects on the lips and teeth in low fevers.

Spas´mo-phil´´ic di-ath´e-sis. Is a condition characterized by an increased elective irritability and a tendency to spasm, like contractions of one or more groups of muscles. (Grulee).

Spe-cif´ic. 1. Pertaining to a species. 2. Produced by a single kind of microorganism. 3. A remedy specially indicated for any particular disease.

Sper´ma-to-zo´´on. The motile generative element of the semen which serves to impregnate the ovum.

Spi´na bif´i-da. Congenital cleft of the vertebral column with meningeal protrusion.

Spi´ro-chæ´´te. A genus or form of flexile spirobacteria.

Sta´sis. A stoppage of the flow of fluid in any organ or any part of the body.

Ste-no´sis. Narrowing or stricture of a duct or canal.

Ster´ile. Nonfertile.

Ster´il-i-za´´tion. The act or process of rendering sterile.