isochrone

\i.zɔ.kʁɔn\

/\i.zɔ.kʁɔn\/ adj

The verdict

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

Unranked
below top-frequency French
9
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Se dit des mouvements qui se font en temps égaux.

Corpus desk

Index FR-isochrone · isochrone · French

isochrone · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-LONG 9 letters
  • VOW-4 4 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 isochrone
PropertyValue
Headwordisochrone
LanguageFrench
Part of speechAdjective
IPA\i.zɔ.kʁɔn\
Letters9
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Longue queue: rang de « isochrone » en français

isochronereste hors des 100.000 mots français les plus fréquents, dans la longue queue du vocabulaire technique, archaïque ou rare, là où le doute d'orthographe frappe.

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

Rare enough to double-check

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

isochrone doesn't appear in our generated misspelling index, suggesting the orthography follows predictable French patterns. This headword has no recorded confusable partner, 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 spelling patterns must be inferred from the word's phoneme-to-grapheme mapping rather than from a documented borrowing chain. The correct French form is isochrone, spelled I-S-O-C-H-R-O-N-E.

Definition

  1. 1
    Se dit des mouvements qui se font en temps égaux.
  2. 2
    Caractérise des oscillations ou un mouvement ondulatoire dont la période reste constante quelle que soit l’amplitude.

Recorded use

Wiktionary examples

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

  1. Mais où rencontrer des cœurs assez parfaitement isochrones, passez-moi cette expression scientifique, pour arriver à cette union céleste ?
  2. Seigneur le Christ est nu jetez jetez sur lui La robe sans couture éteignez les ardeurs Au puits vont se noyer tant de tintement d’heures Quand isochrones choient des gouttes d’eau de pluie

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 "isochrone"?
"isochrone" is spelled I-S-O-C-H-R-O-N-E. The IPA pronunciation is \i.zɔ.kʁɔn\.
What does "isochrone" mean?
As an adjective, "isochrone" means: Se dit des mouvements qui se font en temps égaux.
How do you pronounce "isochrone"?
The IPA (International Phonetic Alphabet) transcription for "isochrone" is \i.zɔ.kʁɔn\. Click the speaker icon on the pronunciation badge above to hear it spoken aloud where audio is available.
What language does "isochrone" come from?
"isochrone" is a French word. PlainSpell covers definitions, pronunciations, and spelling data across English, Spanish, Portuguese, French, and German.
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