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noxious

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adjective nox·ious \ˈnäk-shəs\

Simple Definition of noxious

  • : harmful to living things

Full Definition of noxious

  1. 1 a :  physically harmful or destructive to living beings <noxious waste> b :  constituting a harmful influence on mind or behavior; especially :  morally corrupting <noxious doctrines>

  2. 2 :  disagreeable, obnoxious

nox·ious·ly adverb
nox·ious·ness noun

Examples of noxious

  1. <mixing bleach and ammonia can cause noxious fumes that can seriously harm you>

  2. <noxious smog that for years has been encrusting the historic cathedral with soot>



Origin of noxious

Middle English noxius, from Latin, from noxa harm; akin to Latin nocēre to harm, nec-, nex violent death, Greek nekros dead body


First Known Use: 15th century

Synonym Discussion of noxious

pernicious, baneful, noxious, deleterious, detrimental mean exceedingly harmful. pernicious implies irreparable harm done through evil or insidious corrupting or undermining <the claim that pornography has a pernicious effect on society>. baneful implies injury through poisoning or destroying <the baneful notion that discipline destroys creativity>. noxious applies to what is both offensive and injurious to the health of a body or mind <noxious chemical fumes>. deleterious applies to what has an often unsuspected harmful effect <a diet found to have deleterious effects>. detrimental implies obvious harmfulness to something specified <the detrimental effects of excessive drinking>.

NOXIOUS Defined for Kids

noxious

play
adjective nox·ious \ˈnäk-shəs\

Definition of noxious

  1. :  causing harm <noxious fumes>




Medical Dictionary

noxious

play
adjective nox·ious \ˈnäk-shəs\

Medical Definition of noxious

  1. :  physically harmful or destructive to living beings <noxious wastes>





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