# pneumatic trough

> English word · Noun

## Definitions
1. A piece of laboratory apparatus, consisting of a vessel filled with liquid (generally water or mercury), used for collecting gases.

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