methylene
/ˈmeθɪliːn/noun
as modifier
- Chemistry the divalent radical or group -CH2-, derived from methane by loss of two hydrogen atoms【化】亚甲基, 甲烯基：
methylene chloride.
二氯甲烷。
词源
mid 19th cent.: from French méthylène （formed irregularly from Greek methu 'wine' + hulē 'wood'） + -ENE.