noun
natural toxin; naturally occurring poison
Refers to toxic substances produced by living organisms, such as plants, animals, fungi, or bacteria, as opposed to synthetic chemicals.
キノコの自然毒による食中毒が毎年報告されている。
Food poisoning caused by natural toxins in mushrooms is reported every year.
フグの自然毒は適切に処理しないと危険だ。
The natural toxin in pufferfish is dangerous if not properly prepared.
人工毒 refers to synthetic or man-made poisons, the opposite of 自然毒.
Compound of 自然 (しぜん, 'nature') and 毒 (どく, 'poison').