isothermique

\i.zɔ.tɛʁ.mik\

/\i.zɔ.tɛʁ.mik\/ adj

The verdict

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

Unranked
below top-frequency French
12
letters

According to Wiktionary data (CC BY-SA, analyzed May 6, 2026) - Synonyme d’isotherme.

Corpus desk

Index FR-isothermique · isothermique · French

isothermique · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 12 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "I" 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 isothermique
PropertyValue
Headwordisothermique
LanguageFrench
Part of speechAdjective
IPA\i.zɔ.tɛʁ.mik\
Letters12
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Where “isothermique” sits in French frequency

isothermique falls outside the top-100,000 ranked French words, the long-tail zone of technical, archaic, or low-frequency vocabulary, exactly where readers second-guess spellings most.

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

Rare enough to double-check

isothermique is uncommon French outside the top frequency list, classed as anadjective, transcribed \i.zɔ.tɛʁ.mik\. Rarity is why readers land here mid-draft. 2 senses are on record.

isothermique has no tracked misspelling variants, which points to an orthography that plays by predictable French rules. This entry stands alone in our confusable dataset, since nothing in our dataset looks or sounds close enough to cause mix-ups.

Our source data has no etymology on file for this entry, so any spelling logic here comes from how the word's sounds map to letters, not a documented origin story. The correct French form is isothermique, spelled I-S-O-T-H-E-R-M-I-Q-U-E.

Definition

  1. 1
    Synonyme d’isotherme.
  2. 2
    (qualifie) les lignes qui représentent la loi de transformation d’un corps qui passe d’un état à un autre en conservant une température constante.

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.

PlainSpell is rendered directly from structured Wiktionary extracts and open word-frequency lists, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 6, 2026. Primary sources: Wiktionary (via kaikki.org) and FrequencyWords.

Frequently Asked Questions

How do you spell "isothermique"?
"isothermique" is spelled I-S-O-T-H-E-R-M-I-Q-U-E. The IPA pronunciation is \i.zɔ.tɛʁ.mik\.
What does "isothermique" mean?
As an adjective, "isothermique" means: Synonyme d’isotherme.
How do you pronounce "isothermique"?
The IPA (International Phonetic Alphabet) transcription for "isothermique" is \i.zɔ.tɛʁ.mik\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "isothermique" come from?
"isothermique" is a French word. PlainSpell's reference spans five languages -- English, Spanish, Portuguese, French, and German -- with definitions, pronunciations, and spelling data for each.
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.
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