The Collaborative International Dictionary
decenylene
Decine \De"cine\ (?; 104), n. [From L. decem ten.] (Chem.) One of the higher hydrocarbons, C10H15, of the acetylene series; -- called also decenylene.
Wiktionary
decenylene
n. (context organic compound English) Any of several isomeric acetylenes having ten carbon atoms