Capable of causing damage or dysfunction by toxicity; (broadly) poisonous.

A toxic or poisonous substance.

plural of toxicant

(waste processing) Toxic waste

plural of toxication

In a toxic manner. / (not comparable) With regard to toxins.

Archaic form of toxic.

The quality or degree of being toxic.

(toxicology, pharmacology) Having a chemical nature that is harmful to health or lethal if consumed or otherwise entering into the body in sufficient quantities.

(transitive) To metabolise a drug or other compound to produce a toxic metabolite.