e/Butylene

Information
has gloss	eng: In chemistry, butylene may be an alternate name for the hydrocarbon butene, . It is also a divalent functional group with formula 2• that can be seen as the result of removing two hydrogen atoms from a butane molecule, leaving two free bonds.
lexicalization	eng: butylene
instance of	(noun) the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions chemical science, chemistry