Pronunciation: - ' täk-sik
Function: adjective
Date: 1942
1 : rendering the skin susceptible to damage (as sunburn or blisters) upon exposure to light and especially ultraviolet light < phototoxic antibiotics>
2 : induced by a phototoxic substance
– pho · to · tox · ic · i · ty \ -täk- ' si-s ə -t ē \ noun