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:/ˈθɜːməsfɪə/
UK:Recorded audio is listed in the source snapshot.
General-American:/ˈθɝməsfɪɚ/
1
noun
Meaning 1
The layer of the Earth's atmosphere directly above the mesosphere and directly below the exosphere.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
noun
Meaning 2
the atmospheric layer between the mesosphere and the exosphere
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: layer
History
Etymology
Etymology tree Proto-Indo-European *gwher-der. Ancient Greek θερμός (thermós)der. English thermo- Ancient Greek σφαῖρᾰ (sphaîră)bor. Latin sphaera Late Latin sphērader. Old French spherebor. Middle English spere English sphere English -sphere English thermosphere From thermo- + -sphere.
Across languages
Translations
52 source translations are retained for this English entry.
Arabic:
ثِيرْمُوسْفِير
(ṯīrmūsfīr)
— layer of the Earth's atmosphere
Armenian:
ջերմոլորտ
(ǰermolort)
— layer of the Earth's atmosphere
Azerbaijani:
termosfer
— layer of the Earth's atmosphere
Basque:
termosfera
— layer of the Earth's atmosphere
Belarusian:
тэрмасфе́ра
(termasfjéra)
— layer of the Earth's atmosphere
Bulgarian:
термосфе́ра
(termosféra)
— layer of the Earth's atmosphere
Catalan:
termosfera
— layer of the Earth's atmosphere
Chinese Mandarin:
熱成層 /热成层
(rèchéngcéng)
— layer of the Earth's atmosphere
Chinese Mandarin:
增溫層 /增温层
(zēngwēncéng)
— layer of the Earth's atmosphere
Chinese Mandarin:
熱氣層 /热气层
(rèqìcéng)
— layer of the Earth's atmosphere
Czech:
termosféra
— layer of the Earth's atmosphere
Danish:
termosfære
— layer of the Earth's atmosphere
Dutch:
thermosfeer
— layer of the Earth's atmosphere
Estonian:
termosfäär
— layer of the Earth's atmosphere
Finnish:
termosfääri
— layer of the Earth's atmosphere
French:
thermosphère
— layer of the Earth's atmosphere
Galician:
termosfera
— layer of the Earth's atmosphere
Georgian:
თერმოსფერო
(termospero)
— layer of the Earth's atmosphere
German:
Thermosphäre
— layer of the Earth's atmosphere
Greek:
θερμόσφαιρα
(thermósfaira)
— layer of the Earth's atmosphere
Hebrew:
תרמוספירה
— layer of the Earth's atmosphere
Hungarian:
termoszféra
— layer of the Earth's atmosphere
Icelandic:
hitahvolf
— layer of the Earth's atmosphere
Indonesian:
termosfer
— layer of the Earth's atmosphere
Irish:
teirmeasféar
— layer of the Earth's atmosphere
Italian:
termosfera
— layer of the Earth's atmosphere
Japanese:
熱圏
(netsuken)
— layer of the Earth's atmosphere
Karakalpak:
termosfera
— layer of the Earth's atmosphere
Kazakh:
термосфера
(termosfera)
— layer of the Earth's atmosphere
Korean:
열권
(yeolgwon)
— layer of the Earth's atmosphere
Northern Kurdish:
germasipêr
— layer of the Earth's atmosphere
Kyrgyz:
термосфера
(termosfera)
— layer of the Earth's atmosphere
Latvian:
termosfēra
— layer of the Earth's atmosphere
Lithuanian:
termosfera
— layer of the Earth's atmosphere
Malay:
termosfera
— layer of the Earth's atmosphere
Norwegian:
termosfæren
— layer of the Earth's atmosphere
Persian:
ترموسفر
(termôsfer)
— layer of the Earth's atmosphere
Polish:
termosfera
— layer of the Earth's atmosphere
Portuguese:
termosfera
— layer of the Earth's atmosphere
Romanian:
termosferă
— layer of the Earth's atmosphere
Russian:
термосфе́ра
(termosféra)
— layer of the Earth's atmosphere
Serbo-Croatian:
термосфера
— layer of the Earth's atmosphere
Serbo-Croatian:
termosfera
— layer of the Earth's atmosphere
Slovak:
termosféra
— layer of the Earth's atmosphere
Spanish:
termosfera
— layer of the Earth's atmosphere
Swedish:
termosfär
— layer of the Earth's atmosphere
Tagalog:
initbulog
— layer of the Earth's atmosphere
Thai:
เทอร์โมสเฟียร์
(termoh sàfia)
— layer of the Earth's atmosphere
Turkish:
termosfer
— layer of the Earth's atmosphere
Turkmen:
termosfera
— layer of the Earth's atmosphere
Ukrainian:
термосфе́ра
(termosféra)
— layer of the Earth's atmosphere
Vietnamese:
tầng nhiệt
— layer of the Earth's atmosphere