-ide \-ide\ (Chem.)
A suffix used to denote:
(a) The nonmetallic, or negative, element or radical in a
binary compound; as, oxide, sulphide, chloride.
(b) A compound which is an anhydride; as, glycolide,
phthalide.
(c) Any one of a series of derivatives; as, indogenide,
glucoside, etc.
Source: Webster's Revised Unabridged Dictionary (1913)
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