Definition of "periodide" [per•i•o•dide]

• An iodide containing a higher proportion of iodine than any other iodide of the same substance or series. (noun)

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• "A similar experiment was then made with iodide of lead, and in this manner all confusion from the formation of a periodide avoided (803.)."
• "[A] With regard to perchloride and periodide of mercury, see now 1340,"
• "_Iodides_ of potassium, zinc and lead, protiodide of tin, periodide of mercury; _fluoride_ of potassium; _cyanide_ of potassium; _sulpho-cyanide_ of potassium."