adjective
poisonous
Containing poison or capable of causing harm through toxic substances.
Some poisonous mushrooms look almost identical to varieties people eat.
Etymology
Poison developed from potion or drink to a harmful substance administered or encountered. Poisonous describes something that contains or acts as such a substance.
More examples
- Burning this plastic releases poisonous fumes into the air.
- These berries are poisonous to dogs.
- She wears gloves when handling poisonous chemicals.
Forms
poisonous · more poisonous · most poisonous
poison noun — A substance that harms or kills living organisms.