Rup´ture. 1. Forcible tearing or breaking of a part. 2. Hernia.

Sa´crum. The triangular bone situated at the end of the spine. It is formed of five vertebræ, amalgamated and wedged in between the two innominate bones.

Sag´it-tal. Shaped like, or resembling, an arrow.

Sal´i-va´´tion. An excessive discharge of saliva.

Sal´pin-gi´´tis. Inflammation of an oviduct or of the eustachian tube.

Sal´´var-san´. A compound invented by Ehrlich for the treatment of diseases caused by the Spirillæ, such as syphilis and recurrent fever. It is popularly called 606.

Sa-præ´mi-a. Poisoning of the blood by the absorption of toxins from localized infections as from the uterus.

Scap´u-la. The shoulder blade.

Scro´tum. The pouch which contains the testicles and their accessory organs.

Se-ba´ceous. 1. Pertaining to sebum or suet. 2. Secreting a greasy lubricating substance.