Definition of phototoxic in English:

phototoxic

adjective

Biology Medicine
  • Of, relating to, of the nature of, or causing phototoxicity; becoming toxic after reaction with light.

Origin

1930s; earliest use found in The Lancet. From photo- + toxic.

Pronunciation

phototoxic

/ˌfəʊtəʊˈtɒksɪk/