'mutagen' definitions:
Definition of 'mutagen'
(from WordNet)
noun
Any agent (physical or environmental) that can induce a genetic mutation or can increase the rate of mutation
Definition of 'mutagen'
From: GCIDE
- mutagen \mu"ta*gen\ (m[=u]"t[.a]*j[e^]n), n. A chemical compound or other external influence (such as ionizing radiation) which causes mutations[3]. [PJC]