Definition of thiopental in English:



mass nounUS
  • A sulfur-containing barbiturate drug used as a general anesthetic and hypnotic, and (reputedly) as a truth serum; thiopentone.

    • ‘Fentanyl or thiopental may be given intravenously if a deeper level of anesthesia is required during some parts of the procedure.’
    • ‘In the critical care setting, midazolam, thiopental, and several antibiotics can be added to this list.’
    • ‘The saline intravenous lines are turned off and the thiopental sodium is injected which puts the inmate into a deep sleep.’
    • ‘He and others canvassed six American states for information about their execution protocols, all of which use sequential injections of thiopental, a muscle relaxant, and potassium chloride to kill condemned prisoners.’
    • ‘The procedure typically involves the injection of three substances: first, sodium thiopental to induce anaesthesia, followed by pancuronium bromide to relax muscles, and finally potassium chloride to stop the heart.’


1940s: from thio- + a contraction of pentobarbitone.