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-ene hydrocarbon suffix, from Greek name-forming element -ene. It has no real meaning in itself; in chemistry terminology probably abstracted from methylene (1834). Put in systematic use by Hofmann (1865).
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-el (2)diminutive suffix (though in Modern English not always perceived as such), from Old French -el (fem. -elle, Modern French -el, -eau), from Latin -ellus, -ella, -ellum, diminutive suffix, from PIE *-olo-lo-, itself a double diminutive, from *-lo- (see -ule).
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