Skip to content
Search the dictionary
Word of the Day
Etymology
Tools
A–Z
History
Etymology
· French
méthylène
2 English words descend from French
méthylène
, most common first.
methylene
The divalent group –CH₂– in which the free valencies are part of single bonds.
-yl
A univalent radical or functional group formed from a given molecule. Thus propyl from propane, benzyl from benzene, and so forth.