poisonousadjectiveuk /ˈpɔɪ.zən.əs/ us /ˈpɔɪ.zən.əs/
- Carbon monoxide is a colourless, odourless, poisonous gas.
- These normally harmless substances combine to form a highly poisonous gas.
- Thousands of fish were killed as a result of a discharge of poisonous chemicals from a nearby factory.
- Fungus can be poisonous.
- The chemicals can be poisonous if ingested.
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