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 Michigan wins and Ohio starts regulating phosphorous run-off into Lake Erie creating deadly toxic algae blooms. Jeremy Pelzer, cleveland, "Govs. Mike DeWine, Gretchen Whitmer make bet on Ohio State-Michigan football game," 27 Nov. 2019 The site was contaminated with toxic waste, and in 1983, the Environmental Protection Agency and the state of New Jersey began a cleanup that turned much of it into a park and wildlife preserve. John Wisely, Detroit Free Press, "Move over 'The Irishman,' search for Jimmy Hoffa may have new lead," 21 Nov. 2019 In January, a tailings dam at an iron ore mine collapsed, burying hundreds of people under toxic waste. Washington Post, "Brazil’s Bolsonaro calls Amazon deforestation ‘cultural,’ says it ‘will never end’," 20 Nov. 2019 Operators of the Superfund site have since swapped out PCB pipes carrying away the toxic waste for flame-resistant steel ones. CBS News, "At least 60% of Superfund sites vulnerable to climate change, congressional watchdog warns," 18 Nov. 2019 Operators of the Superfund site have since swapped out PCB pipes carrying away the toxic waste for flame-resistant steel ones. Ellen Knickmeyer, chicagotribune.com, "Agency says climate change imperils 60% of Superfund sites," 17 Nov. 2019 The plants perch atop the roof of a film production studio in the Greenpoint section of Brooklyn, beside a Superfund toxic-waste site. Anne Barnard, New York Times, "How a Rooftop Meadow of Bees and Butterflies Shows N.Y.C.’s Future," 26 Oct. 2019 Infrastructure would include 125 kilometers of road and humanmade lakes full of toxic mine wastes covering an area nearly the size of New York City's Manhattan island. Warren Cornwall, Science | AAAS, "How a salmon scientist got hooked into a battle over the world’s largest gold mine," 26 Sep. 2019 The important card isn’t the arsenic and toxic waste in the soil, as spelled out in a report written by a consultant to the MLS team. Dave Hyde, sun-sentinel.com, "Hyde5: The soil isn’t the real contamination with MLS plans in Miami," 22 Aug. 2019 Recent Examples on the Web: Noun Pollution, from oily toxics to plastics, spills into coastal waters. Craig Welch, National Geographic, "Sea turtles are surviving—despite us," 20 Sep. 2019 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

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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Time Traveler for toxic

Time Traveler

The first known use of toxic was in 1664

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Statistics for toxic

Last Updated

3 Dec 2019

Cite this Entry

“Toxic.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/toxic?pronunciation&lang=en_us&dir=t&file=toxic001. Accessed 5 December 2019.

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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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