Search Result for "ch2:ch":

The Collaborative International Dictionary of English v.0.48:

Ethenyl \Eth"e*nyl\, n. [Ethene + -yl.] (Chem.) (a) A trivalent hydrocarbon radical, CH3.C. (b) A univalent hydrocarbon radical of the ethylene series, CH2:CH; -- called also vinyl. See Vinyl. [1913 Webster]