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- Dictionarypoisonous/ˈpɔɪzənəs/
adjective
- 1. (of a substance or plant) causing or capable of causing death or illness if taken into the body: "poisonous chemicals" Similar Opposite
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POISONOUS definition: 1. very harmful and able to cause illness or death: 2. A poisonous animal or insect uses poison in…. Learn more.
The meaning of POISONOUS is destructive, harmful. How to use poisonous in a sentence.
1. adjective. Something that is poisonous will kill you or make you ill if you swallow or absorb it. All parts of the yew tree are poisonous, including the berries. ...a large cloud of poisonous gas. Synonyms: toxic, fatal, deadly, lethal More Synonyms of poisonous. 2. adjective.
Poisonous definition: full of or containing poison. See examples of POISONOUS used in a sentence.
POISONOUS meaning: 1. very harmful and able to cause illness or death: 2. A poisonous animal or insect uses poison in…. Learn more.
Definition of poisonous adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.
If something is poisonous, you'd better not eat, drink, inhale, or touch it: it will make you sick. Some poisonous materials can even kill you. Of course, this adjective is derived from the noun poison, which is a toxic substance. You can also calls things poisonous if they're harmful in less physical ways.