The meaning of TOXIC is containing or being poisonous material especially when capable of causing death or serious debilitation. How to use toxic in a sentence.

TOXIC definition: of, pertaining to, affected with, or caused by a toxin or poison. See examples of toxic used in a sentence.

TOXIC definition: 1. poisonous: 2. very unpleasant or unacceptable: 3. causing you a lot of harm and unhappiness…. Learn more.

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Definition of toxic adjective in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Toxicity is the degree to which a chemical substance or a particular mixture of substances can damage an organism. [1] Toxicity can refer to the effect on a whole organism, such as an …

1. of, pertaining to, affected with, or caused by a toxin or poison: a toxic condition. 2. acting as or having the effect of a poison; poisonous: a toxic drug.

There are seven meanings listed in OED's entry for the word toxic, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence.

Dec 14, 2025 · toxic (comparative more toxic, superlative most toxic) Tobacco smoke contains many toxic substances. If some types of electronic waste aren’t incinerated at a high enough …

If you describe something such as a relationship, situation, or discussion as toxic, you mean that it is very bad or harmful. A recession and high unemployment is a politically toxic combination. …