Methylene may refer to:
Methylene group or methylene bridge (CH2< or equivalently −CH2−), a part of a molecule connected to the rest of the molecule by two single bonds. An older name for methylidene group (=CH2), a part of a molecule connected to another atom by a double bond. Methylene (compound) (CH2), an organic compound.
See also Bichloride of methylene (30% methanol and 70% chloroform), a variant of the old anesthetic A.C.E. mixture Methyl group Methylenedioxy Mytilene, a city in Greece Methanol
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