phenobarbital

noun
phe·​no·​bar·​bi·​tal | \ ˌfē-nō-ˈbär-bə-ˌtȯl How to pronounce phenobarbital (audio) \

Definition of phenobarbital

: a crystalline barbiturate C12H12N2O3 used as a hypnotic, sedative, and anticonvulsant

Examples of phenobarbital in a Sentence

Recent Examples on the Web Mandell’s 5-year-old Labradoodle, Frankie Feldman, was diagnosed with the disorder last year and put on phenobarbital and Keppra by his vet. Susan Spillman, Los Angeles Times, "Why some pet owners are turning to CBD to treat their ailing animals," 4 Oct. 2019

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

First Known Use of phenobarbital

1919, in the meaning defined above

Keep scrolling for more

Learn More about phenobarbital

Time Traveler for phenobarbital

Time Traveler

The first known use of phenobarbital was in 1919

See more words from the same year

Statistics for phenobarbital

Cite this Entry

“Phenobarbital.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/phenobarbital. Accessed 23 January 2020.

Keep scrolling for more

More Definitions for phenobarbital

phenobarbital

noun
phe·​no·​bar·​bi·​tal | \ ˌfē-nō-ˈbär-bə-ˌtȯl, -tȧl How to pronounce phenobarbital (audio) \

Medical Definition of phenobarbital

: a crystalline barbiturate C12H12N2O3 that is used orally or is administered by injection in the form of its sodium salt C12H11N2NaO3 as a hypnotic and sedative — see luminal

Comments on phenobarbital

What made you want to look up phenobarbital? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

out of the ordinary or unreasonable

Get Word of the Day daily email!

Test Your Vocabulary

Intact Latin Quiz

  • roman tablet
  • What did focus mean in Latin?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

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