1. 
   Tetrylene
   Tet'ryl·ene noun [ Tetr a- + eth ylene .] (Chemistry) Butylene; -- so called from the four carbon atoms in the molecule.
   Found op http://www.encyclo.co.uk/webster/T/35
   
   
2. 
   tetrylene
   <chemistry> Butylene; so called from the four carbon atoms in the molecule. ... Origin: Tetra- + ethylene. ... Source: Websters Dictionary ... (01 Mar 1998) ...
   Found op http://www.mondofacto.com/facts/dictionary?tetrylene
   
   
3. 
   Tetrylene
   • (n.) Butylene; -- so called from the four carbon atoms in the molecule.
   Found op http://thinkexist.com/dictionary/meaning/tetrylene/
   
   

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