English-Thai Dictionary
methylene
N ที่ มี methylene group
Webster's 1913 Dictionary
METHYLENE
Meth "yl *ene, n. Etym: [F. méthylène, from Gr. wood spirit. ] (Chem. )
Defn: 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.
New American Oxford Dictionary
methylene
meth yl ene |ˈmeTHəˌlēn ˈmɛθəlin | ▶noun [ as modifier ] Chemistry the divalent radical or group −CH 2 −, derived from methane by loss of two hydrogen atoms: methylene chloride. ORIGIN mid 19th cent.: from French méthylène (formed irregularly from Greek methu ‘wine ’ + hulē ‘wood ’) + -ene .
Oxford Dictionary
methylene
methylene |ˈmɛθɪliːn | ▶noun [ as modifier ] Chemistry of or denoting the divalent radical or group −CH 2 −, derived from methane by loss of two hydrogen atoms: methylene chloride. ORIGIN mid 19th cent.: from French méthylène (formed irregularly from Greek methu ‘wine ’ + hulē ‘wood ’) + -ene .
The Wordsmith Dictionary