# pneumatics

> English word · Noun · frequency rank #95,280

## Definitions
1. The branch of mechanics that deals with the mechanical properties of gases
2. The study or knowledge of spiritual beings and their relations to God, angels, and human beings.

## Etymology
From pneumatic.

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