# tokamak

> English word · Noun · IPA /ˈtəʊkəmæk/ · frequency rank #71,171

## Definitions
1. A torus-shaped chamber used in nuclear fusion research in which a plasma is magnetically confined.

## Etymology
Borrowed from Russian токама́к (tokamák), an acronym of то(роида́льная) ка́(мера) (с) ма(гни́тными) к(ату́шками) (to(roidálʹnaja) ká(mera) (s) ma(gnítnymi) k(atúškami), “toroidal chamber with magnetic coils”).

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