Search Result for "butadiene": 
Wordnet 3.0

NOUN (1)

1. a gaseous hydrocarbon C4H6; used in making synthetic rubbers; 



The Collaborative International Dictionary of English v.0.48:

butadiene \butadiene\ n.
   a gaseous hydrocarbon C4H6; -- it is used as a monomer unit
   in making synthetic rubbers.
   [WordNet 1.5]


WordNet (r) 3.0 (2006):

butadiene
    n 1: a gaseous hydrocarbon C4H6; used in making synthetic
         rubbers