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toxic

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

(adjective)

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.

See toxic in Webster's New World College Dictionary

adjective

of, affected by, or caused by a toxin, or poison
acting as a poison; poisonous

Origin: ML toxicus < L toxicum, a poison < Gr toxicon, a poison, orig., poison in which arrows were dipped < toxicos, of or for a bow < toxon, a bow

noun

a toxic substance; also, something contaminated by a toxic substance: usually used in pl.

Related Forms:

toxicity noun

See toxic in American Heritage Dictionary 4

adjective

Of, relating to, or caused by a toxin or other poison: a toxic condition; toxic hepatitis.
Capable of causing injury or death, especially by chemical means; poisonous: food preservatives that are toxic in concentrated amounts; a dump for toxic industrial wastes. See Synonyms at poisonous.

noun

A toxic chemical or other substance.

Origin:

Origin: Late Latin toxicus

Origin: , from Latin toxicum, poison

Origin: , from Greek toxikon, poison for arrows, poison

Origin: , from neuter of toxikos, of a bow

Origin: , from toxon, bow

Origin: , from Old Persian *taxša-, an arrow

Related Forms: