Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A chemical or other agent that damages cellular DNA, resulting in mutations or cancer.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun oncology Any substance capable of causing damage to cellular DNA and thus producing mutations or cancer.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

[New Latin geno-, gene (from Greek genos, race, offspring; see genə- in Indo-European roots) + toxin.]

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