A hydrocarbon compound with two double bonds; an alkene with the molecular structure characteristic of containing two carbon-carbon double bonds.
From 'bi-' (prefix meaning two) + '-dene' (chemical suffix indicating double bonds, from 'ene' referring to alkenes). A systematic chemistry term following IUPAC nomenclature.
'Bidene' is a chemistry term so specialized that even most chemists use it only in technical contexts—it represents how modern science creates thousands of perfectly logical but obscure terms by combining prefixes and suffixes.
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