butyrolactone

noun

bu·​tyr·​o·​lactone

¦byütə(ˌ)rō,

-ərə +

plural -s

: a mobile liquid lactone C₄H₆O₂ made usually by dehydrogenation of 1,4-butanediol and used chiefly as a solvent for resins (such as polymers of acrylonitrile)

called also butanolide

Word History

Etymology

butyr- + lactone

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