Search Result for "methylene group":
Wordnet 3.0

NOUN (1)

1. the bivalent radical CH2 derived from methane;
[syn: methylene group, methylene radical, methylene]



WordNet (r) 3.0 (2006):

methylene group
    n 1: the bivalent radical CH2 derived from methane [syn:
         methylene group, methylene radical, methylene]