A hydrocarbon compound containing a double bond between two carbon atoms; an alkene in organic chemistry.
From Greek 'allo' (other) + '-ene' (chemical suffix for double bonds). This chemical term emerged as organic chemistry systematized the naming of hydrocarbons.
Allylenes are the building blocks for tons of useful plastics and chemicals—ethylene (the ripening hormone in fruit) is an allylene that's literally making your bananas yellow right now!
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