# rheocrat

> English word · Noun

## Definitions
1. A kind of motor speed controller permitting gradual variation in speed, and reversal. It is especially suitable for use with motor-driven machine tools.

## Etymology
From rheo- + -crat.

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