1

toxic

adjective tox·ic \ ˈtäk-sik \
Updated on: 16 Nov 2017

Definition of toxic

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

toxicity

play \täk-ˈsi-sə-tē\ noun

Examples of toxic in a Sentence

  1. The fumes from that chemical are highly toxic.

  2. Tests will be run to determine if the landfill is toxic.

Recent Examples of toxic from the Web

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.

Origin and Etymology of toxic

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


2

toxic

noun

Definition of toxic

:a toxic substance usually used in plural

Examples of toxic in a Sentence

  1. tested for toxics in the water supply

Recent Examples of toxic from the Web

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.

First Known Use of toxic

1890


toxic-

combining form
variants: or toxico-

Definition of toxic-

:poison
  • toxicology

Origin and Etymology of toxic-

New Latin, from Latin toxicum



TOXIC Defined for English Language Learners

toxic

adjective

Definition of toxic for English Language Learners

  • : containing poisonous substances


TOXIC Defined for Kids

toxic

adjective tox·ic \ ˈtäk-sik \

Definition of toxic for Students

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

History for toxic

Sometimes people put poison on the points of arrows. Even a slight wound from such an arrow can be fatal. The ancient Greeks referred to arrow poison as toxikon, short for toxikon pharmakon, literally, “bow drug” (from toxos, “bow”). As Latin toxicum, the word was applied more generally to any poison. The English word toxic comes from this Latin word.


Medical Dictionary

1

toxic

adjective tox·ic \ ˈtäk-sik \

medical Definition of toxic

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
3 a :affected by a poison or toxin
b :affected with toxemia of pregnancy
  • toxic pregnant women

2

toxic

noun

medical Definition of toxic

:a toxic substance

Law Dictionary

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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