Greek deity, daughter of Perseus and Asteria (said to be originally Thracian), later identified as an aspect of Artemis, early 15c., from Latinized form of Greek Hekatē, usually said to be the fem. of hekatos "far-shooting" (but Beekes prefers a Pre-Greek origin). In English literature associated since Shakespeare ("I Henry VI," III.ii.64) with witches and sorcery. Related: Hecatean.

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Definitions of Hecate from WordNet

Hecate (n.)
(Greek mythology) Greek goddess of fertility who later became associated with Persephone as goddess of the underworld and protector of witches;