nonius
/ˈnəʊnɪəs/
"nonius" is a 6-letter English headword indexed on PlainSpell.
The verdict
“nonius” is uncommon English (outside the top frequency list), classed as a noun. The kind of spelling people second-guess.
- Unranked
- below top-frequency English
- 6
- letters
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - A device for adjusting the accuracy of mathematical instruments, later superseded by the vernier.
Corpus desk
Index EN-nonius · nonius · English
nonius · unranked · 0 variants · 0 confusables
- FREQ-UNRANKED Unranked
- LEN-LONG 6 letters
- VOW-3 3 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.
| Property | Value |
|---|---|
| Headword | nonius |
| Language | English |
| Part of speech | Noun |
| IPA | /ˈnəʊnɪəs/ |
| Letters | 6 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Long-tail rank of “nonius” in English
Rare enough to double-check
nonius is uncommon English outside the top frequency list, classed as anoun, transcribed /ˈnəʊnɪəs/. Rarity is why readers land here mid-draft. Gloss: "A device for adjusting the accuracy of mathematical instruments, later superseded by the vernier.".
nonius has no tracked misspelling variants, since its letter pattern doesn't lend itself to common typo substitutions. Our confusable-pair dataset has no match for it, which typically means the spelling is too distinctive to be mistaken for another word.
Etymologically, the entry records: Borrowed from Latin Nonius, the Latinised form of the name of its inventor, Pedro Nunes (1502-78), a Portuguese mathematician and geographer. The correct English form is nonius, spelled N-O-N-I-U-S.
Definition
- 1A device for adjusting the accuracy of mathematical instruments, later superseded by the vernier.
Recorded use
Wiktionary exampleThese source excerpts show how nonius appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Well, of course, one must manipulate the various Screw-Settings precisely, read the Nonius, and an hundred other details besides I’d but bore you with,—
Etymology
Borrowed from Latin Nonius, the Latinised form of the name of its inventor, Pedro Nunes (1502-78), a Portuguese mathematician and geographer.
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.