toxic

adjective
tox·​ic | \ ˈtäk-sik How to pronounce toxic (audio) \

Definition of toxic

 (Entry 1 of 3)

1 : containing or being poisonous material especially when capable of causing death or serious debilitation toxic waste a toxic radioactive gas an insecticide highly toxic to birds
2 : exhibiting symptoms of infection or toxicosis the patient became toxic two days later
3 : extremely harsh, malicious, or harmful toxic sarcasm
4 : relating to or being an asset that has lost so much value that it cannot be sold on the market

toxic

noun

Definition of toxic (Entry 2 of 3)

: a toxic substance usually used in plural
variants: or toxico-

Definition of toxic- (Entry 3 of 3)

: poison toxicology

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Other Words from toxic

Adjective

toxicity \ täk-​ˈsi-​sə-​tē How to pronounce toxicity (audio) \ noun

Synonyms & Antonyms for toxic

Synonyms: Adjective

envenomed, poison, poisoned, poisonous, venomous

Synonyms: Noun

bane, poison, toxin, venom

Antonyms: Adjective

nonpoisonous, nontoxic, nonvenomous

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Examples of toxic in a Sentence

Adjective

The fumes from that chemical are highly toxic. Tests will be run to determine if the landfill is toxic.

Noun

tested for toxics in the water supply
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Recent Examples on the Web: Adjective

Here are a few coping strategies for handling this holiday if your dad is toxic. Molly Longman, refinery29.com, "How To Handle Father's Day When Your Dad Is Toxic," 15 June 2019 That process would suck all the oxygen from the water, turning it toxic. Sarah Kaplan, Twin Cities, "‘A major punch in the gut’: Midwest rains projected to create Gulf dead zone," 11 June 2019 In 2017, a study out of King's College in London hypothesized that, over time, the cumulative effect of ingesting plastic could be toxic. National Geographic, "You eat thousands of bits of plastic every year," 5 June 2019 The public nature of the NHS, which has been free to use for seven decades, is practically seen as sacred in the U.K., and attempts to change that status are politically toxic. David Meyer, Fortune, "There's One Subject in the U.K. That's as Toxic as Brexit. Trump Just Waded Into It," 4 June 2019 Light- or short-coated dogs can get sunburned, so ask your vet for recommendations on canine sunscreen because some human sunscreens are toxic if your pet licks them off. Arricca Sansone, Country Living, "Everything You Need to Know About Hiking With Your Dog," 12 Feb. 2019 Black rhino—some mammalian reflection of the Jurassic, thick-skinned toughness of this landscape—lumber through the ravines, lunching on the weird euphorbia plants that are toxic to most other creatures. Stanley Stewart, Condé Nast Traveler, "Going Off-Grid in Namibia," 21 Dec. 2018 Scientists have found the two substances can be toxic to coral reefs, which are a vital part of the ocean ecosystem and a popular draw for tourists. CBS News, "Hawaii moves to ban sale of sunscreens with coral-harming chemicals," 4 July 2018 Onions, salt, dough, avocadoes, grapes, raisins and chocolate can be potentially toxic to your pet. Susannah Bryan, Sun-Sentinel.com, "Keep your pet safe on July 4th," 2 July 2018

Recent Examples on the Web: Noun

Joseph has previously tested its drinking water for 2,4-D, the less toxic of the two chemicals. Rob Davis | The Oregonian/oregonlive, oregonlive.com, "Recovery begins on Wallowa Lake barrels that may contain Agent Orange ingredients," 13 June 2019 The June failure to meet emission standards limiting air toxics represents a new challenge for Colstrip owners. Hal Bernton, The Seattle Times, "Puget Sound Energy looks elsewhere for power as pollution-test failure idles most of Montana coal plant," 27 July 2018 The Kennecott Minerals Company cleaned up toxics and donated the subsurface. Tom Kizzia, Anchorage Daily News, "Amid the ruins of the Kennecott mine, a quiet new look at a unique slice of history," 26 June 2018 In the past, the organization has said coffee has health benefits and that the lawsuit made a mockery of the state law intended to protect people from toxics. Washington Post, "California moves to clear coffee of cancer-risk stigma," 17 June 2018 In the past, the organization has said coffee has health benefits and that the lawsuit made a mockery of the state law intended to protect people from toxics. Brian Melley, BostonGlobe.com, "California moves to clear coffee of cancer-risk stigma," 16 June 2018 In the past, the organization has said coffee has health benefits and that the lawsuit made a mockery of the state law intended to protect people from toxics. Brian Melley, BostonGlobe.com, "California moves to clear coffee of cancer-risk stigma," 16 June 2018 In the past, the organization has said coffee has health benefits and that the lawsuit made a mockery of the state law intended to protect people from toxics. Washington Post, "California moves to clear coffee of cancer-risk stigma," 17 June 2018 In the past, the organization has said coffee has health benefits and that the lawsuit made a mockery of the state law intended to protect people from toxics. Brian Melley, BostonGlobe.com, "California moves to clear coffee of cancer-risk stigma," 16 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'toxic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of toxic

Adjective

1664, in the meaning defined at sense 1

Noun

1890, in the meaning defined above

History and Etymology for toxic

Adjective

Late Latin toxicus, from Latin toxicum poison, from Greek toxikon arrow poison, from neuter of toxikos of a bow, from toxon bow, arrow

Combining form

New Latin, from Latin toxicum

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Statistics for toxic

Last Updated

18 Jun 2019

Look-up Popularity

Time Traveler for toxic

The first known use of toxic was in 1664

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More Definitions for toxic

toxic

adjective

English Language Learners Definition of toxic

: containing poisonous substances

toxic

adjective
tox·​ic | \ ˈtäk-sik How to pronounce toxic (audio) \

Kids Definition of toxic

: containing, being, or caused by poisonous or dangerous material toxic waste toxic effects

toxic

adjective
tox·​ic | \ ˈtäk-sik How to pronounce toxic (audio) \

Medical Definition of toxic

 (Entry 1 of 2)

1 : containing or being poisonous material especially when capable of causing serious injury or death toxic drugs toxic gas
2 : of, relating to, or caused by a poison or toxin toxic liver damage
3a : affected by a poison or toxin
b : affected with toxemia of pregnancy toxic pregnant women

toxic

noun

Medical Definition of toxic (Entry 2 of 2)

: a toxic substance

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toxic

adjective
tox·​ic | \ ˈtäk-sik How to pronounce toxic (audio) \

Legal Definition of toxic

1 : containing or being poisonous material especially when capable of causing death or serious debilitation
2 : having substantially lowered worth specifically : relating to or being an asset that has lost so much value that it cannot be sold on the market toxic assets toxic subprime loans

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More from Merriam-Webster on toxic

Thesaurus: All synonyms and antonyms for toxic

Spanish Central: Translation of toxic

Nglish: Translation of toxic for Spanish Speakers

Britannica English: Translation of toxic for Arabic Speakers

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