IPA: //ˈdeɪ.ɪ.saɪd//
KK: /ˈdɛɪɪˌsaɪd/
The act of killing a god or goddess, or the person who commits this act.
In some mythologies, deicide is seen as a grave offense against the divine.
Deicide is formed from "deus" (meaning god) and "-cide" (from Latin "caedere", meaning to kill). The word refers to the act of killing a god, specifically in the context of the death of Jesus Christ in Christian theology.
Think of 'deus' meaning god and '-cide' meaning to kill — this helps you remember that deicide refers to the act of killing a god.