non·​car·​cin·​o·​gen ˌnän-kär-ˈsi-nə-jən How to pronounce noncarcinogen (audio)
: something that is not known to cause cancer : a substance or agent that is not a carcinogen
studied the effects of noncarcinogens on overall health
noncarcinogenic adjective
noncarcinogenic chemicals

Word History

First Known Use

1942, in the meaning defined above

Time Traveler
The first known use of noncarcinogen was in 1942

Dictionary Entries Near noncarcinogen

Cite this Entry

“Noncarcinogen.” Dictionary, Merriam-Webster, Accessed 8 Feb. 2023.

Medical Definition


non·​car·​cin·​o·​gen -kär-ˈsin-ə-jən, -ˈkärs-ᵊn-ə-ˌjen How to pronounce noncarcinogen (audio)
: a noncarcinogenic substance or agent
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words Named After People

  • name tags
  • Namesake of the leotard, Jules Léotard had what profession?
True or False

Test your knowledge - and maybe learn something along the way.

Solve today's spelling word game by finding as many words as you can with using just 7 letters. Longer words score more points.

Can you make 12 words with 7 letters?