tox·i·col·o·gy 
(tŏk′sĭ-kŏlə-jē)
(tŏk′sĭ-kŏlə-jē)n.
The study of the nature, effects, and detection of poisons and the treatment of poisoning.
tox′i·co·logi·cal (-kə-lŏjĭ-kəl), tox′i·co·logic (-ĭk) adj.
tox′i·co·logi·cal·ly adv.
tox′i·colo·gist n.