noun · 2 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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Received-Pronunciation:/ˈtəʊkəmæk/
Southern-England:Recorded audio is listed in the source snapshot.
General-American:/ˈtoʊkəmæk/
1
noun
Meaning 1
A torus-shaped chamber used in nuclear fusion research in which plasma is magnetically confined.
Definition source: English Wiktionary via Wiktextract
Qualifier: nuclear physics
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
a doughnut-shaped chamber used in fusion research; a plasma is heated and confined in a magnetic bottle
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: chamber
History
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”).
Across languages
Translations
16 source translations are retained for this English entry.
Armenian:
տոկամակ
(tokamak)
— A torus-shaped chamber in which a plasma is magnetically confined
Belarusian:
такама́к
(takamák)
— A torus-shaped chamber in which a plasma is magnetically confined
Chinese Mandarin:
托卡馬克 /托卡马克
(tuōkǎmǎkè)
— A torus-shaped chamber in which a plasma is magnetically confined
French:
tokamak
— A torus-shaped chamber in which a plasma is magnetically confined
Georgian:
ტოკამაკი
(ṭoḳamaḳi)
— A torus-shaped chamber in which a plasma is magnetically confined
German:
Tokamak
— A torus-shaped chamber in which a plasma is magnetically confined
Japanese:
トカマク
(tokamaku)
— A torus-shaped chamber in which a plasma is magnetically confined
Korean:
토카막
(tokamak)
— A torus-shaped chamber in which a plasma is magnetically confined
Polish:
tokamak
— A torus-shaped chamber in which a plasma is magnetically confined
Portuguese:
tokamak
— A torus-shaped chamber in which a plasma is magnetically confined
Russian:
токама́к
(tokamák)
— A torus-shaped chamber in which a plasma is magnetically confined
Serbo-Croatian:
tokàmak
— A torus-shaped chamber in which a plasma is magnetically confined
Serbo-Croatian:
тока̀мак
— A torus-shaped chamber in which a plasma is magnetically confined
Spanish:
Tokamak
— A torus-shaped chamber in which a plasma is magnetically confined
Turkish:
tokamak
— A torus-shaped chamber in which a plasma is magnetically confined
Ukrainian:
токама́к
(tokamák)
— A torus-shaped chamber in which a plasma is magnetically confined
