Hades: the underworld; also the name of the Greek god of the underworld; known as Pluto to the Romans

Hadrian: Roman emperor who ruled from A.D. 117–138

Hellenistic period: historic period that begins after Alexander the Great's death in 323 B.C., when his empire was broken into many separate kingdoms; most were ruled by dynasties descended from his generals and thus were strongly influenced by Greek culture

Hephaistos: Greek god of fire and blacksmithing; husband of Aphrodite; known as Vulcan by the Romans

Hera: Greek goddess of family and marriage, wife of Zeus; known as Juno by the Romans

Herakles: Greek mythological hero; son of the god Zeus and the mortal Alkmene, known for his courage and great strength; called Hercules by the Romans

Hercules: Roman name for the Greek hero Herakles

herm: sculpted stone pillar topped with a head

Hermes: a Greek god who was the herald and messenger of the other gods; also the god of science, commerce, eloquence, and cunning, and guide of departed souls to Hades; known as Mercury to the Romans

Hesperides: nymphs who guarded the golden apples that Herakles stole in the last of his Labors