gamma-butyrolactone

(redirected from 4-hydroxybutyric acid lactone)
Also found in: Medical.

gam·ma-bu·tyr·o·lac·tone

 (găm′ə-byo͞o′tə-rə-lăk′tōn′)
n. Abbr. GBL
A chemical that has many industrial uses, especially as a solvent. It is a chemical precursor to gamma-hydroxybutyrate and is ingested illegally for its euphoriant and sedative effects.
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