1. A barbiturate drug used as a sedative and hypnotic; also known as pentobarbital.
Usage: chiefly British English; medical/pharmaceutical term; controlled substance in many jurisdictions

Examples

• Pentobarbitone was commonly prescribed as a sleeping aid in the mid-20th century.
• The doctor prescribed pentobarbitone to help the patient manage severe insomnia.
• Pentobarbitone is a Schedule II controlled substance in the United States.
• The anesthetic properties of pentobarbitone made it useful in surgical procedures.
• Pentobarbitone has largely been replaced by newer sedative medications in clinical practice.