Look up methylene in Wiktionary, the free dictionary.
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 (=CH2), a part of a molecule connected to another atom by a double bond.
- Methylene (compound) (CH2), an organic compound.