# pentobarbital

> English word · Noun · IPA /ˌpɛn.təˈbɑɹ.bəˌtɔl/ · frequency rank #78,933

## Definitions
1. A narcotic and sedative barbiturate drug (trademark Nembutal) formerly used to relieve insomnia.

## Etymology
From pent(yl) + -o- + barbital.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/pentobarbital