• WordNet 3.6
    • n butylene any of three isomeric hydrocarbons C4H8; all used in making synthetic rubbers
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Webster's Revised Unabridged Dictionary
    • Butylene (Chem) Any one of three metameric hydrocarbons, C4H8, of the ethylene series. They are gaseous or easily liquefiable; -- called also butene.
    • Butylene the hypothetical divalent radical -(CH2)4-; -- used in combining forms; as, butylene diamine.
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Century Dictionary and Cyclopedia
    • n butylene A hydrocarbon (C4H8) belonging to the olefine series. It exists in three isomeric forms, all of which are gases at ordinary temperatures.
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Webster's Revised Unabridged Dictionary
From Butyl


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Exo-H (INCI: Water ( aqua and) butylene glycol (and) alteromonas exopolysaccharide extract) restores the natural hydration process.