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Table of Contents -- Methylene POS
HYPHEN
WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY

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Methylene

POS

Noun

HYPHEN

meth=yl=ene

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WORDNET DICTIONARY

Noun Methylene has 1 sense

methylene(n = noun.substance) methylene group, methylene radical - the bivalent radical CH2 derived from methane;

is a kind of chemical group, group, radical

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CIDE DICTIONARY

Methylene, n. [F. méthylène, from Gr. wine + wood; -- a word coined to correspond to the name wood spirit.].

A divalent 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. [1913 Webster]

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

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OXFORD DICTIONARY

Methylene, n. Chem. the highly reactive divalent group of atoms CH2.

Etymology

F m{eacute}thyl{egrave}ne f. Gk methu wine + hule wood + -ENE