nontoxic

1 of 2

adjective

non·​tox·​ic ˌnän-ˈtäk-sik 

: 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

Adjective

Some art sets are nontoxic and come with washable paints or other materials. —Bestreviews, Mercury News, 16 June 2025

This is safe for people and wildlife and relatively nontoxic to beneficial insects such as ladybugs that prey on them. —Tim Johnson, Chicago Tribune, 14 June 2025

The toys are beautifully made with nontoxic materials. —Adrienne So, Wired News, 17 May 2025

These engines, which the team says can carry safe and nontoxic propellant, work by the spacecraft passing an electric current through water to create stores of high-pressure hydrogen and oxygen. —Monisha Ravisetti, Space.com, 18 Apr. 2025

Word History

First Known Use

Adjective

circa 1862, in the meaning defined above

Noun

1976, in the meaning defined above

Rhymes for nontoxic

• anoxic
• hypoxic
• antitoxic
• cytotoxic
• genotoxic
• nephrotoxic
• neurotoxic
• phytotoxic
• hepatotoxic
• toxic

Medical Definition

nontoxic

adjective

non·​tox·​ic -ˈtäk-sik 

1

: not toxic

nontoxic chemicals

2

of goiter : not associated with hyperthyroidism