The divalent radical CH{2}< in which the free valencies are part of single bonds
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
{i} hydrocarbon radical that is regarded as an essential residue and component of certain derivatives of methane (Chemistry)