Turn of life. The change of life when menstruation ceases.

Tympanum. Ear-drum. Illus. p. 109.

U

Umbilical. Of the navel; as umbilical hernia. Illus. [page 883].

Umbilical Cord. A cord-like substance which conveys the blood to the foetus from the placenta or afterbirth.

Umbilicus. The Navel.

Unstriated. Not grooved or striped.

Uræmic. Pertaining to blood-poisoning from the presence of urea in the circulation.

Urates. The pinkish deposit found in urine.

Urea. A constituent of the urine.