# mercury arc rectifier

> English word · Noun

## Definitions
1. A rectifier which converts alternating current to direct current, using a cathode tube with a pool of liquid mercury. Now superseded by solid-state rectifiers.

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