Hymen. The virginal membrane at the orifice of the vagina.

Hyperæmia. An excess of blood in an organ.

Hyperesthesia. Exalted sensibility.

Hypertrophy. Augmented bulk; enlargement.

Hypnotic. Sleep producing; soporific.

Hypochoridrium. The region under the floating ribs.

Hypogastrium. The lower part of the abdomen, near the pubis.

Ichor. Thin, watery, and acrid discharge.

Icterus. Jaundice.

Idiopathic. Primarily affecting; not secondary or symptomatic.