Definify.com
Webster 1913 Edition
Methylene
Meth′yl-ene
,Noun.
[F.
méthylène
, from Gr. [GREEK] wine + [GREEK] wood; – a word coined to correspond to the name wood spirit
.] (Chem.)
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,
; – formerly called also methylene
bromide, CH2Br2
methene
. Methylene blue
(Chem.)
, an artificial dyestuff consisting of a complex sulphur derivative of diphenyl amine; – called also
pure blue
.Definition 2024
methylene
methylene
See also: méthylène
English
Noun
methylene (countable and uncountable, plural methylenes)
- (organic chemistry) The divalent radical CH2< in which the free valencies are part of single bonds.
- (organic chemistry) The same group, present as a repeating unit, in aliphatic compounds with names such as hexamethylenediamine.
- (organic chemistry) The unstable carbene CH2:
Translations
divalent radical
group present as a repeating unit
unstable carbene CH2
