Definitions for: Methylene

[n] the bivalent radical CH2 derived from methane

Webster (1913) Definition: Meth"yl*ene, n. [F. m['e]thyl[`e]ne, 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.

Synonyms: methylene group, methylene radical

See Also: chemical group, group, radical

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