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olefiant |
1 definition found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Olefiant \O*le"fi*ant\, a. [F. ol['e]fiant, fr.L. oleum oil + -ficare (in comp.). Cf {-Fy}.] (Chem.) Forming or producing an oil; specifically, designating a colorless gaseous hydrocarbon called ethylene. [Archaic]