IPA: /ɛmˈpɔɪzənmənt/
KK: /ɛmˈpɔɪzənmənt/
The act of causing harm or illness by introducing a toxic substance into the body.
The empoisonment of the water supply led to a public health crisis.
Empoisonment is formed from "empoisoner" (from Old French, meaning to poison) and the suffix "-ment" (meaning the action or result of). The word refers to the act or process of poisoning someone or something.
Think of the Old French word 'empoisoner' which means to poison, and remember that 'empoisonment' refers to the action of causing poison.