nontoxic

1 of 2

adjective

non·​tox·​ic ˌnän-ˈtäk-sik How to pronounce nontoxic (audio)
Synonyms of nontoxicnext
: not toxic
a nontoxic work environment
a nontoxic, biodegradable pesticide
nontoxic household cleaners

nontoxic

2 of 2

noun

plural nontoxics
: a nontoxic substance
… began searching for nontoxics to control nematodes, insects and invasive species.Don Curlee

Examples of nontoxic in a Sentence

Recent Examples on the Web
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Adjective
The government, which used the firefighting foam at 28 defense bases across the country, alleged 3M gave assurances the substance was safe to dispose of, biodegradable and nontoxic. Reuters, NBC news, 28 May 2026 Officials have also warned that in the event of an explosion, there could be fire or flash fire in some areas, as well as areas where the chemical cloud would be immediately dangerous to life and health, and a much larger area where the chemical would be smelled, but at nontoxic levels. Deborah Netburn, Los Angeles Times, 24 May 2026 The nontoxic, antioxidant-rich lip oils are made with calming botanicals to deliver soft, plump, hydrated lips. ABC News, 19 May 2026 Scroll on for more stunning cookware, including a ceramic casserole dish, a nontoxic stock pot, and a handy bread loaf pot. Mariana Best, Better Homes & Gardens, 16 May 2026 See All Example Sentences for nontoxic

Word History

First Known Use

Adjective

circa 1862, in the meaning defined above

Noun

1976, in the meaning defined above

Time Traveler
The first known use of nontoxic was circa 1862

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Cite this Entry

“Nontoxic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/nontoxic. Accessed 5 Jun. 2026.

Medical Definition

nontoxic

adjective
non·​tox·​ic -ˈtäk-sik How to pronounce nontoxic (audio)
1
: not toxic
nontoxic chemicals
2
of goiter : not associated with hyperthyroidism

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