pentobarbital

• pentobarbitone (British)

From pent(yl) +‎ -o- +‎ barbital.

• (General American) IPA^(key): /ˌpɛn.təˈbɑɹ.bəˌtɔl/

pentobarbital (countable and uncountable, plural pentobarbitals)

1. (pharmacology) A narcotic and sedative barbiturate drug (trademark Nembutal) formerly used to relieve insomnia.
   • 2016, Christopher Kelly, The Pink Bus. Mapple Shade, New Jersey: Lethe Press. p. 146.

     And lest anyone think traipsing through the gray and bleach-smelly execution chamber where triple homicide offenders are injected with pentobarbital isn't depressing enough, later they will stage a press conference in front of the gates of Captain Joe Byrd Cemetery, the parched plot of land where executed prisoners whose bodies family members prefer not to claim are buried.

• equitensin
• euthesate

• sodium pentobarbital

• “pentobarbital”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “pentobarbital”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.