Toxic meaning

tŏk'sĭk
The definition of toxic is something poisonous, or something very harmful or bad.

A poison that will cause you to become very ill is an example of something that would be described as toxic.

A relationship that is very bad for your mental health is an example of something that would be described as toxic.

adjective
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9
Acting as a poison; poisonous.
adjective
25
9
Capable of causing injury or death, especially by chemical means; poisonous.
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12
A toxic chemical or other substance.
noun
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13
Relating to or caused by a toxin or other poison.

A toxic condition; toxic hepatitis.

adjective
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8
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A toxic substance; also, something contaminated by a toxic substance.
noun
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6
Capable of causing injury or death, especially by chemical means; poisonous.

Toxic industrial waste.

adjective
6
6
A toxic chemical or other substance.
noun
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Relating to or caused by a toxin.
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6
Of, affected by, or caused by a toxin, or poison.
adjective
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8
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Of, relating to, or caused by a toxin or other poison.

A toxic condition; toxic hepatitis.

adjective
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9
(toxicology) Having a chemical nature that is harmful to health or lethal if consumed or otherwise entering into the body in sufficient quantities.
adjective
2
5
Capable of causing injury or death, especially by chemical means; poisonous.

Toxic industrial waste.

adjective
1
9

Origin of toxic

  • Late Latin toxicus from Latin toxicum poison from Greek toxikon poison for arrows, poison from neuter of toxikos of a bow from toxon bow from Old Persian taxša- an arrow
    From American Heritage Dictionary of the English Language, 5th Edition
  • French toxique, from Late Latin toxicus (“poisoned"), from Latin toxicum (“poison"), from Ancient Greek τοξικόν (toxikon), φάρμακον (pharmakon, “poison for use on arrows"), from τοξικός (toxikos, “pertaining to arrows or archery"), from τόξον (toxon, “bow").
    From Wiktionary