English word noncarcinogen comes from English non-, English carcinogen (A substance or agent that can cause cancer.)
| Dictionary entry | Language | Definition |
|---|---|---|
| non- | English (eng) | Used in the sense of not, to negate the meaning of the word to which it is prefixed. |
| carcinogen | English (eng) | A substance or agent that can cause cancer. |
| noncarcinogen | English (eng) | A substance that is not a carcinogen. |