Meth"yl*ene (?), n. [F. m'ethylene, from Gr. wine + wood; -- a word coined to correspond to the name wood spirit.] Chem.

A hydrocarbon radical, CH2, not known in the free state, but regarded as an essential residue and component of certain derivatives of methane; as, methylene bromide, CH2Br2; -- formerly called also methene.

Methylene blue Chem., an artificial dyestuff consisting of a complex sulphur derivative of diphenyl amine; -- called also pure blue.


© Webster 1913.

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