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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Synonyms & Antonyms for toxic

Synonyms: Adjective

Synonyms: Noun

Antonyms: Adjective

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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 But the potential for a toxic algae had not been a consideration. Hal Bernton, Anchorage Daily News, "Why are birds and seals starving in a Bering Sea full of fish?," 10 Nov. 2019 The blue-green toxic algae is an annual problem in Lake Erie, from Toledo to Sandusky. Laura Johnston, cleveland, "2019 Lake Erie harmful algal bloom twice as severe as last year’s," 4 Nov. 2019 The ocean heated as much as 6 degrees during that time, and toxic algae formed along the coast, killing many species. Peter Fimrite, SFChronicle.com, "Climate havoc wipes out coastal kelp as S.F. Bay’s native fish species die off," 22 Oct. 2019 But those numbers do not include tipping points, most feedback loops, additional warming hidden by toxic air pollution, or the aspects of equity and climate justice. Osita Nwanevu, The New Republic, "Sinners in the Hands of an Angry Greta Thunberg," 25 Sep. 2019 Fifty percent may be acceptable to you, but those numbers do not include tipping points, most feedback loops, additional warming hidden by toxic air pollution or the aspects of equity and climate justice. NBC News, "Read Greta Thunberg's full speech at the United Nations Climate Action Summit," 23 Sep. 2019 An interactive map released by the board also shows a dangerous level of toxic algae at the Big Break Regional Shoreline in Oakley. Mercury News Staff And Wire Reports, The Mercury News, "Toxic algae warnings issued for some Bay Area lakes," 30 Aug. 2019 In Georgia, one couple posted a warning about toxic algae after their dog got sick just 30 minutes after swimming in a lake. Josiah Bates, Time, "Blue-Green Algae That Can Kill Dogs Has Just Been Found in New York City Parks," 26 Aug. 2019 Look out for odorous or murky waters to avoid the toxic algae. Catherine Kim, Vox, "Vox Sentences: All flights canceled," 14 Aug. 2019 Recent Examples on the Web: Noun Adding certain types of biomass to the soil and covering it in plastic can kill the spores, as the material decomposes and releases gas toxic to bacteria and fungi. Erik Stokstad, Science | AAAS, "Devastating banana disease may have reached Latin America, could drive up global prices," 17 July 2019 From his initial charm to his subsequent gaslighting, Parker's behavior is textbook toxic. Elena Nicolaou, refinery29.com, "Luke Parker Is The New Chad Johnson — But Even Worse," 20 June 2019 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

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

19 Nov 2019

Time Traveler for toxic

The first known use of toxic was in 1664

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More Definitions for toxic

toxic

adjective
How to pronounce toxic- (audio)

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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