Definition of butyrolactone in US English:

butyrolactone

noun

Chemistry
  • In full "gamma-butyrolactone". An oily liquid γ-lactone used as a solvent and sometimes also taken as a recreational drug (being metabolized to GHB in the body).

Origin

Late 19th century; earliest use found in Science. From butyro- + lactone, after German Butyrolakton.

Pronunciation

butyrolactone

/ˌbjuːtɪrəʊˈlaktəʊn/