"inferior or minor deity, a being partly of divine nature," 1520s, from demi- + god, rendering Latin semideus. It can mean the offspring of a deity and a mortal, a man raised to divine rank, or a minor god. Related: Demigoddess.
demerit
Demerol
demesne
Demeter
demi-
demigod
demijohn
demilitarize
demi-monde
demise
demisemiquaver