seco·​bar·​bi·​tal | \ ˌse-kō-ˈbär-bə-ˌtȯl How to pronounce secobarbital (audio) \

Definition of secobarbital

: a barbiturate C12H18N2O3 that is used chiefly in the form of its bitter hygroscopic sodium salt as a hypnotic and sedative

Examples of secobarbital in a Sentence

Recent Examples on the Web In their legal quest to avoid a painful death, the prisoners offer up a dark variety of alternatives, including firing squad, sevoflurane gas, diazepam and fentanyl, an oral dose of secobarbital and pentobarbital. Keri Blakinger, Houston Chronicle, 26 June 2018 Once the secobarbital had been procured, Kathy seemed to relax. Kevin Simpson, The Denver Post, 2 Apr. 2017 Stone mixed applesauce with the powdered secobarbital, a powerful sedative that is fatal in high doses. Soumya Karlamangla,, 30 June 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'secobarbital.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of secobarbital

1951, in the meaning defined above

History and Etymology for secobarbital

from Seconal, a trademark + barbital

Learn More About secobarbital

Time Traveler for secobarbital

Time Traveler

The first known use of secobarbital was in 1951

See more words from the same year

Dictionary Entries Near secobarbital




See More Nearby Entries 

Statistics for secobarbital

Cite this Entry

“Secobarbital.” Dictionary, Merriam-Webster, Accessed 25 Jan. 2022.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More Definitions for secobarbital


seco·​bar·​bi·​tal | \ ˌsek-ō-ˈbär-bə-ˌtȯl How to pronounce secobarbital (audio) \

Medical Definition of secobarbital

: a barbiturate that is used chiefly in the form of its bitter hygroscopic sodium salt C12H17N2NaO3 as a hypnotic and sedative

called also quinalbarbitone

— see seconal

More from Merriam-Webster on secobarbital Encyclopedia article about secobarbital


Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

Universal Daily Crossword

A daily challenge for crossword fanatics.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!