noun bu·tyr·o·lactone \¦byütə(ˌ)rō, -ərə +\

Definition of butyrolactone



  1. :  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

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Origin and Etymology of butyrolactone

butyr- + lactone

Seen and Heard

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a trip made at another's expense

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