Толковый словарь английского языка Oxford English Reference - toxic

adj. 1 of or relating to poison (toxic symptoms). 2 poisonous (toxic gas). 3 caused by poison (toxic anaemia). Derivatives toxically adv. toxicity n. Etymology: med.L toxicus poisoned f. L toxicum f. Gk toxikon (pharmakon) (poison for) arrows f. toxon bow, toxa arrows