Definitions

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

  • noun A poison or poisonous agent.
  • adjective Poisonous; toxic.

from The Century Dictionary.

  • Having toxic effect; capable of poisoning.
  • noun A poison.

from the GNU version of the Collaborative International Dictionary of English.

  • noun A poisonous agent or drug, as opium; an intoxicant.

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

  • adjective Capable of causing damage by poisoning
  • noun A toxic or poisonous substance

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun any substance that causes injury or illness or death of a living organism
  • adjective having the qualities or effects of a poison

Etymologies

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Examples

  • But two years ago, California's Development and Reproductive Toxicant Identification Committee of physicians voted unanimously that BPA should not be classified as a dangerous toxicant because there was no evidence of harm to humans.

    Jon Entine: BPA Dilemma: NRDC Vs. California Vs. Science Jon Entine 2011

  • But two years ago, California's Development and Reproductive Toxicant Identification Committee of physicians voted unanimously that BPA should not be classified as a dangerous toxicant because there was no evidence of harm to humans.

    Jon Entine: BPA Dilemma: NRDC Vs. California Vs. Science Jon Entine 2011

  • Ability of environmental toxicant trichloroethylene to promote immune pathology is strain-specific.

    The Autoimmune Epidemic Donna Jackson Nakazawa 2008

  • Ability of environmental toxicant trichloroethylene to promote immune pathology is strain-specific.

    The Autoimmune Epidemic Donna Jackson Nakazawa 2008

  • Exposure to a metabolite of the environmental toxicant trichloroethylene attenuates CD4+ T cell activation-induced cell death by metalloproteinase-dependent FasL shedding.

    The Autoimmune Epidemic Donna Jackson Nakazawa 2008

  • Exposure to a metabolite of the environmental toxicant trichloroethylene attenuates CD4+ T cell activation-induced cell death by metalloproteinase-dependent FasL shedding.

    The Autoimmune Epidemic Donna Jackson Nakazawa 2008

  • A "reproductive toxicant" that the Center for Disease Control and Prevention says targets organs like the "eyes, skin, respiratory system, central nervous system, [and] reproductive system."

    Kevin Grandia: What the Frack: Is Pumping Glass Cleaner Into the Earth Okay? 2010

  • A "developmental toxicant, immunotoxicant, reproductive toxicant, respiratory toxicant, skin or sense organ toxicant."

    Kevin Grandia: What the Frack: Is Pumping Glass Cleaner Into the Earth Okay? 2010

  • I'm thinking something deemed a "developmental toxicant" is probably not a good thing in any amount and it's definitely not good in the thousands-of-gallons.

    Kevin Grandia: Watch out for hydraulic fracturing it might make your hair orange 2010

  • We do know that there are some very nasty chemicals in fracking fluid, like formamide, a "reproductive toxicant" that the Center for Disease Control and Prevention says targets organs like the "eyes, skin, respiratory system, central nervous system, [and] reproductive system," and isopropanol which is a main ingredient in household glass cleaners.

    Kevin Grandia: Waxman and Markey's Hydraulic Fracking Smackdown 2010

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