nonisochronous

adj

"nonisochronous" is a 14-letter English headword indexed on PlainSpell.

The verdict

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

Unranked
below top-frequency English
14
letters

According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Not isochronous.

Corpus desk

Index EN-nonisochronous · nonisochronous · English

nonisochronous · unranked · 0 variants · 0 confusables

  • FREQ-UNRANKED Unranked
  • LEN-MEGA 14 letters
  • VOW-6 6 vowels
  • CONFUS-0 No pairs
  • VAR-0 0 variants
  • BOOK-THIN "N" thin
  • PHOTO-UNK Peer pending

Read with this headword: Spelling guide for this pattern

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 nonisochronous
PropertyValue
Headwordnonisochronous
LanguageEnglish
Part of speechAdjective
Letters14
Misspellings tracked0
Confusable pairs0
SourceWiktionary (kaikki.org)

Long-tail rank of “nonisochronous” in English

nonisochronousranks outside the top 100,000 English headwords, in the long tail of specialist, archaic, or seldom-used vocabulary, exactly the territory where a reader stops mid-sentence to double-check spelling.

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

Rare enough to double-check

nonisochronous is uncommon English outside the top frequency list, classed as anadjective. Rarity is why readers land here mid-draft. Gloss: "Not isochronous.".

Zero misspellings are on record for nonisochronous in our index, suggesting the orthography follows predictable English patterns. This entry stands alone in our confusable dataset, suggesting its spelling stands apart enough that readers rarely confuse it with something else.

Etymologically, the entry records: From non- + isochronous. The correct English form is nonisochronous, spelled N-O-N-I-S-O-C-H-R-O-N-O-U-S.

Definition

  1. 1
    Not isochronous.

Recorded use

Wiktionary example

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

  1. Using the correction of a vector field to characterize isochronicity and explicit computations of this quantity for polynomial vector fields, wa are able to describe a very large class of nonisochronous Hamiltonian system of even degree of degree arbitrary large.

Etymology

From non- + isochronous.

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 "nonisochronous"?
"nonisochronous" is spelled N-O-N-I-S-O-C-H-R-O-N-O-U-S.
What does "nonisochronous" mean?
As an adjective, "nonisochronous" means: Not isochronous.
What is the origin of the word "nonisochronous"?
From non- + isochronous. 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.

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

Source: FrequencyWords open word-frequency list