cosinus
\kɔ.si.nys\
The verdict
“cosinus” is uncommon French (frequency #57,851 among 8,609 “C” headwords), classed as a noun. The kind of spelling people second-guess.
- #57,851
- frequency rank, French
- 8,609
- “C” headwords
According to Wiktionary data (CC BY-SA, analyzed September 3, 2026) - Rapport, dans un triangle rectangle, de la longueur du côté adjacent à l’angle considéré par la longueur de l’hypoténuse.
Corpus desk
Index FR-cosinus · cosinus · French
cosinus · rank #57,851 · 0 variants · 0 confusables
- FREQ-RARE #57,851
- LEN-LONG 7 letters
- VOW-3 3 vowels
- CONFUS-0 No pairs
- VAR-0 0 variants
- BOOK-DENSE 8,609
- PHOTO-FINISH cortisol
Nearest frequency peer: cortisol (-1 rank slots)
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.
Rangs de longue queue près de « cosinus »
Bande clairsemée: les barres inversent le rang pour que le rare se lise plus court
- corporative
corporative
42,152 corpus weight
- cortisol
cortisol
42,151 corpus weight
- cosinus
cosinus
42,150 corpus weight
- cosmologique
cosmologique
42,149 corpus weight
- cotise
cotise
42,148 corpus weight
- Coutinho
Coutinho
42,147 corpus weight
What this shows Vue de longue queue: où « cosinus » se situe face à des rangs français aussi rares.
| Property | Value |
|---|---|
| Headword | cosinus |
| Language | French |
| Part of speech | Noun |
| IPA | \kɔ.si.nys\ |
| Letters | 7 |
| Frequency rank | #57,851 |
| Misspellings tracked | 0 |
| Confusable pairs | 0 |
| Source | Wiktionary (kaikki.org) |
Longue queue: rang de « cosinus » en français
Rare enough to double-check
cosinus is uncommon French at frequency #57,851 among 8,609 “C” headwords, classed as anoun, transcribed \kɔ.si.nys\. Rarity is why readers land here mid-draft. Gloss: "Rapport, dans un triangle rectangle, de la longueur du côté adjacent à l’angle considéré par la longueur de l’hypoténuse.".
cosinus doesn't appear in our generated misspelling index, since its letter sequence doesn't invite the usual edit-distance slips. This entry stands alone in our confusable dataset, since its spelling is unusual enough that it doesn't cluster with a lookalike.
Our source data has no etymology on file for this entry, so its spelling is easiest to reason about phoneme by phoneme, absent a documented history. The correct French form is cosinus, spelled C-O-S-I-N-U-S.
Definition
- 1Rapport, dans un triangle rectangle, de la longueur du côté adjacent à l’angle considéré par la longueur de l’hypoténuse.
Recorded use
Wiktionary exampleThese source excerpts show how cosinus appears in context. They illustrate usage; the definition above remains the entry’s reference meaning.
Si dans un triangle rectangle on abaisse une perpendiculaire du sommet de l'angle droit sur l’hypoténuse, le rapport d'un segment d’hypoténuse à la longueur de l’hypoténuse est égal au carré du cosinus de l'angle adjacent au segment.
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 French corpus, MIT). See the methodology for how each field is sourced and updated.
Frequently Asked Questions
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Similar French words by spelling shape
Same letter count and similar misspelling depth for "cosinus", not the corpus desk frequency band.
Same letter count
Frequency-ranked French headwords with 7 letters (nearest by frequency rank).