• epilepsy

See cortical epilepsy, under hemisphere (hem'is-fer). Half of a sphere, also any object so shaped, cerebellar h's. The two lateral ma es of the cerebellum, cerebral h's. The two lateral ma es of the cerebrum, h's of the brain. See cerebral h's. h's of the bulb (of the urethra). The lateral halves of the posterior portion of the bulb of the urethra. [Gr., emisphaira, from emi, half, -fsphaira, sphere.]