thermonuklear

[ˌtɛʁmonukleˈaːɐ̯]

/[ˌtɛʁmonukleˈaːɐ̯]/ adj

The verdict

“thermonuklear” is uncommon German (outside the top frequency list), classed as an adjective. The kind of spelling people second-guess.

Unranked
below top-frequency German
13
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - die bei einer Kernreaktion auftretende Wärme betreffend

Corpus desk

Index DE-thermonuklear · thermonuklear · German

thermonuklear · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 13 letters
  • VOW-5 5 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "T" thin
  • PHOTO-UNK Peer pending

Desk codes from Wiktionary headword shape, FrequencyWords rank tier, confusable-pair count, generated misspelling depth, letter-cohort book size, and photo-finish peer. Not a difficulty grade.

Key facts for thermonuklear
PropertyValue
Headwordthermonuklear
LanguageGerman
Part of speechAdjective
IPA[ˌtɛʁmonukleˈaːɐ̯]
Letters13
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Langschwanz-Rang von „thermonuklear“ im Deutschen

thermonuklearschafft es nicht in die Top 100.000 des Deutschen: Zone für Fach-, Alt- oder Seltenwortschatz.

Beyond rank #100,000. Source: FrequencyWords open word-frequency list.

Rare enough to double-check

thermonuklear is uncommon German outside the top frequency list, classed as anadjective, transcribed [ˌtɛʁmonukleˈaːɐ̯]. Rarity is why readers land here mid-draft. Gloss: "die bei einer Kernreaktion auftretende Wärme betreffend".

thermonuklear doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. No confusable counterpart is on file for this word, which usually means its spelling is distinct enough that readers don't reach for a similar-looking word instead.

Wiktionary doesn't record an etymology for this headword, so its spelling pattern is best understood through pronunciation rather than a traceable origin. The correct German form is thermonuklear, spelled T-H-E-R-M-O-N-U-K-L-E-A-R.

Definition

  1. 1
    die bei einer Kernreaktion auftretende Wärme betreffend

Recorded use

Wiktionary examples

These source excerpts show how thermonuklear appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.

  1. Im Weltall spielt sich die Kernverschmelzung in den Sternen, wie etwa unserer Sonne, in gesteuerter Weisse ab und spendet seit Jahrmilliarden ohne Gleichgewichtsstörung thermonukleare Energie.
  2. Die thermonukleare Energie aus diesem Prozess startet eine Kettenreaktion in deren Folge das zuvor akkumulierte Gas explodiert, wobei der Weiße Zwergstern jedoch intakt bleibt.

This word in other languages

Definitions, pronunciation, and etymology for this entry are drawn from Wiktionary via the kaikki.org structured extract (CC BY-SA). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "thermonuklear"?
"thermonuklear" is spelled T-H-E-R-M-O-N-U-K-L-E-A-R. The IPA pronunciation is [ˌtɛʁmonukleˈaːɐ̯].
What does "thermonuklear" mean?
As an adjective, "thermonuklear" means: die bei einer Kernreaktion auftretende Wärme betreffend
How do you pronounce "thermonuklear"?
The IPA (International Phonetic Alphabet) transcription for "thermonuklear" is [ˌtɛʁmonukleˈaːɐ̯]. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "thermonuklear" come from?
"thermonuklear" is a German word. You can look up definitions, pronunciations, and spelling data for this and other words across English, Spanish, Portuguese, French, and German on PlainSpell.
Is PlainSpell free to use?
Yes, PlainSpell is a completely free word reference. You can look up definitions, pronunciations, confusable pairs, homophones, and spelling corrections across 5 languages without any sign-up or subscription.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list