Definitions for "Methylene"
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.
the bivalent radical CH2 derived from methane
In chemistry, methylene is a divalent functional group CH2 derived formally from methane.
(MEH-THEE-LAEN ) A TETRA-VALENT, HYDRO-CARBON GROUP, THAT IS MADE OF A CARBON ATOM, WITH TWO HYDRON ATOMS, CH2, BOTH BONDED TO THE CARBON ATOM,WITH CO-VALENT BONDS,. AND TWO OTHER BONDS, TO TWO OTHER ATOMS. THEY ARE FOUND IN ALKANES, IN ALKANE-LIKE CARBON BRANCH EXTENSIONS, ALKENES, ALKYNES AND BETWEEN ARENE RINGS IN PHENYL ANTHRENES.