SINCE 1828
phenobarbital
noun
phe·no·bar·bi·tal
| \ ˌfē-nō-ˈbär-bə-ˌtȯl
\
\
Definition of phenobarbital
: a crystalline barbiturate C12H12N2O3 used as a hypnotic, sedative, and anticonvulsant
Keep scrolling for more
Keep scrolling for more
More Definitions for phenobarbital
phenobarbital
noun
phe·no·bar·bi·tal
| \ ˌfē-nō-ˈbär-bə-ˌtȯl, -tȧl
\
\
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).
Test Your Vocabulary
Time Traveler Quiz: Which Word Came First?
-
- Which came first?
Test your knowledge - and maybe learn something along the way.
TAKE THE QUIZ
Test Your Knowledge - and learn some interesting things along the way.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Word Games
-
Time Traveler Quiz: Which Word Came First?
Which word entered the English language first?
Take the quiz -
Slippery Words Quiz—Changing with the Times
Do you know these earlier meanings of words?
Take the quiz -
True or False?
Test your knowledge - and maybe learn something along the way.
Take the quiz -
Word Winder's CrossWinder
Play the game
Share phenobarbital
Resources for phenobarbital