noun, noun or participle which takes 'suru', intransitive verb
Medical or biological poisoning from substances, food, or toxins. Used as a noun or with する to mean 'to be poisoned'.
食中毒で入院した。
I was hospitalized with food poisoning.
ガス中毒に注意してください。
Please be careful of gas poisoning.
noun, used as a suffix
addiction; hooked on
Suffix-like use indicating strong addiction or obsession with something, often used in compounds like アルコール中毒 (alcoholism) or ゲーム中毒 (gaming addiction).
彼はスマホ中毒だ。
He is addicted to his smartphone.
ネット中毒にならないように気をつけて。
Be careful not to get addicted to the internet.