toxic

adjective
tox·​ic | \ˈtäk-sik \

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 \ 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

Environmental concerns have been a major issue in the campaign because of an outbreak of blue-green algae and red tide, which produces toxic chemicals blamed for killing fish, sea turtles, dolphins and other animals. Arian Campo-flores, WSJ, "Florida Senate Seat Becomes Year’s Most Expensive Race," 26 Oct. 2018 No children are allowed at the mine, and toxic chemicals like mercury and arsenic are reduced and contained so no leakages can damage the environment or communities around. Nicole Phelps, Vogue, "Jeweler Pippa Small’s New Collection Was Hand-Forged 4,000 Meters Up in Bolivia," 22 Oct. 2018 As the popular science blogger Credible Hulk explains using data from the U.S. Geological Survey, as Roundup’s popularity has increased, use of older, more toxic agricultural chemicals has decreased. Yvette D'entremont, SELF, "Should You Worry About Herbicides In Your Food?," 10 Oct. 2018 As a devout Roman Catholic, she is seen as toxic to some Democrats. Doug Mckelway, Fox News, "If Kavanaugh nomination fails, here's who could be next in line," 26 Sep. 2018 Instead, the analysis revealed that the layer of green was saturated in arsenic, a highly toxic substance known to irritate the stomach, intestines and lungs, as well as induce nausea, diarrhea and skin changes. Meilan Solly, Smithsonian, "Arsenic-Laced Books Discovered in University Library," 3 July 2018 Laura Silber, a spokeswoman for Soros’ Open Society Foundations, blamed the country’s toxic political environment. Jim Mustian, The Seattle Times, "Bomb found at philanthropist George Soros’ suburban home," 23 Oct. 2018 Subprime mortgage bonds, the most toxic of the MBSs during the financial crisis, are virtually nonexistent in the market today (although there is still roughly $400 billion in outstanding subprime MBSs issued before the crisis). Jeff Andrews, Curbed, "10 years after the financial crisis, is the housing market still at risk?," 29 Aug. 2018 Doing so can release toxic or harmful chemicals into the air, according to the Environmental Protection Agency. Jean Nick, Good Housekeeping, "8 Kinds of Wood That You Should Absolutely Never Burn," 13 July 2018

Recent Examples on the Web: Noun

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 Grassroots mobilizations and other forms of pressure helped nudge America’s political leadership to halt pipelines and craft new policies on climate change, fracking, and toxics. Christopher Sellers, Vox, "How Republicans came to embrace anti-environmentalism," 6 July 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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Dictionary Entries near toxic

Toxcatl

toxemia

toxemic jaundice

toxic

toxic-

toxical

toxicant

Statistics for toxic

Last Updated

3 Dec 2018

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 \

Kids Definition of toxic

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

toxic

adjective
tox·​ic | \ˈtäk-sik \

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 \

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

Comments on toxic

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