Nu´tri-ent. Nourishing; affording nutriment.

Nym´phæ. The labia minora.

Ob-stet´rics. The art of managing childbirth cases; that branch of surgery which deals with the management of pregnancy and labor.

Ob-ste-tri´cian. One who practices obstetrics.

Oc´ci-put. The back part of the head.

Ol´i-go-hy-dram´´ni-os. Scantiness of the liquor amnii.

Ol´i-gop-nœ´´a. A delay following the birth of a child before the first respiration is established.

Oph-thal´mi-a. Severe inflammation of the eye or of the conjunctiva.

Or´gan. Any part of the body having a special function.

Os. (L., a mouth.) The orifice in the uterus or vagina.