fluoride poisoning [L, fluere, to flow, potio, drink] , 1. See fluorosis. 2. the toxic effects of contact with compounds of fluorine, an intensely poisonous pale yellow gas. Sodium fluoroacetate is a powerful rodent poison; methyl fluoroacetate is regarded as too toxic to use as a pesticide. The fluoroacetate compounds inhibit enzymes of the citric acid cycle. Inhalation of hydrogen fluoride can lead to bronchospasm, laryngospasm, and pulmonary edema.