thermite

/ˈθɜː(ɹ).maɪt/

//ˈθɜː(ɹ).maɪt// noun

"thermite" is a 8-letter English headword indexed on PlainSpell.

The verdict

“thermite” is uncommon English (frequency #71,163 among 27,828 “T” headwords), classed as a noun. The kind of spelling people second-guess.

#71,163
frequency rank, English
27,828
“T” headwords

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - A mixture of a metal and a metal oxide capable of producing a thermite reaction, such as aluminium metal and ferric oxide; used in incendiary devices.

Key facts for thermite
PropertyValue
Headwordthermite
LanguageEnglish
Part of speechNoun
IPA/ˈθɜː(ɹ).maɪt/
Letters8
Frequency rank#71,163
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “thermite” sits in English frequency

Every-word frequency runs from the handful of words we use constantly (left) to the long tail used once in a blue moon (right). thermite lands here:

#1#100#1K#10K#100K
← used constantlyrarely used →

Scale is logarithmic (each tick is 10× rarer). Source: FrequencyWords open word-frequency list.

Rare enough to double-check

thermite is uncommon English at frequency #71,163 among 27,828 “T” headwords, classed as anoun, transcribed /ˈθɜː(ɹ).maɪt/. Rarity is why readers land here mid-draft. Gloss: "A mixture of a metal and a metal oxide capable of producing a thermite reaction, such as aluminium metal and ferric oxide; used in incendiary devices.".

thermite doesn't appear in our generated misspelling index, which points to an orthography that plays by predictable English rules. It is not paired with a close-neighbour confusable in our dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From German Thermit, from Ancient Greek θερμός (thermós, “heat”) + -it; comparable to English therm- + -ite. The correct English form is thermite, spelled T-H-E-R-M-I-T-E.

Definition

  1. 1
    A mixture of a metal and a metal oxide capable of producing a thermite reaction, such as aluminium metal and ferric oxide; used in incendiary devices.

Etymology

From German Thermit, from Ancient Greek θερμός (thermós, “heat”) + -it; comparable to English therm- + -ite.

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); frequency ordering uses the FrequencyWords open word-frequency list (2018 English corpus, MIT). See the methodology for how each field is sourced and updated.

Frequently Asked Questions

How do you spell "thermite"?
"thermite" is spelled T-H-E-R-M-I-T-E. The IPA pronunciation is /ˈθɜː(ɹ).maɪt/.
What does "thermite" mean?
As a noun, "thermite" means: A mixture of a metal and a metal oxide capable of producing a thermite reaction, such as aluminium metal and ferric oxide; used in incendiary devices.
How do you pronounce "thermite"?
The IPA (International Phonetic Alphabet) transcription for "thermite" is /ˈθɜː(ɹ).maɪt/. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What is the origin of the word "thermite"?
From German Thermit, from Ancient Greek θερμός (thermós, “heat”) + -it; comparable to English therm- + -ite. See the full etymology section above for more details.
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.

Using “thermite”

The practical upshot for anyone who landed here from a spell-check.

  • The one correct English spelling is T-H-E-R-M-I-T-E - every other letter order is a misspelling in standard orthography.
  • Say it as /ˈθɜː(ɹ).maɪt/ (IPA); tap the speaker on the pronunciation badge to hear it where audio exists.
  • Browse more English words and confusable pairs in the same reference. English words

Other uncommon English words near this rank

Data Source

Wiktionary (via kaikki.org), licensed under CC BY-SA & GFDL. Word ordering uses an open word-frequency list; misspelling variants are generated by edit-distance from the correct headword.

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

Source: FrequencyWords open word-frequency list FrequencyWords open word-frequency list