thiopental

noun

thio·​pen·​tal ˌthī-ō-ˈpen-ˌtal How to pronounce thiopental (audio) -ˌtȯl How to pronounce thiopental (audio)
: a barbiturate C11H18N2O2S used in the form of its sodium salt especially as an intravenous anesthetic compare pentothal

Examples of thiopental in a Sentence

Recent Examples on the Web
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South Carolina and other states had in the past had difficulty obtaining some drugs for lethal injections, including sodium thiopental and pancuronium bromide, due to shortages. Kristin Wright, NPR, 25 Apr. 2025 States, then the federal government, turned to it when the European Union banned the export of sodium thiopental to prevent its use in executions. Staff Report, Hartford Courant, 25 June 2024 In July 2015, the state tried to import sodium thiopental, which had been used to carry out executions but was no longer manufactured by companies approved by the U.S. Food and Drug Administration. Jacques Billeaud, Anchorage Daily News, 20 Jan. 2023 The original three-drug protocol was developed by an Oklahoma state medical examiner and included the anesthetic sodium thiopental, a paralytic drug called pancuronium bromide, and potassium chloride, which is supposed to stop the heart within minutes. Dana G. Smith, Scientific American, 23 Sep. 2022 See All Example Sentences for thiopental

Word History

Etymology

thi- + pentobarbital

First Known Use

1947, in the meaning defined above

Time Traveler
The first known use of thiopental was in 1947

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Cite this Entry

“Thiopental.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thiopental. Accessed 10 Sep. 2025.

Medical Definition

thiopental

noun
thio·​pen·​tal ˌthī-ō-ˈpen-ˌtal How to pronounce thiopental (audio) -ˌtȯl How to pronounce thiopental (audio)
: a barbiturate used in the form of its sodium salt C11H17N2NaO2S especially as an intravenous anesthetic see pentothal
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