Cosine
surname · Latin script
Meaning: In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse
Recorded for both men and women· direction only, no split published
Cosine is a surname written in the Latin script, most frequently recorded in the United States.
- BRBrazil
- NLNetherlands
- GBUnited Kingdom
Where the name is found, darker where our sources hold more of it. No national register counts its bearers anywhere we hold data, so the map carries no figures. One hue, darker where it is more common; hover a country for its figure.
Meaning & origin(measured from records)
In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse. Symbol: cos
Sources 1
- kaikki.org Wiktionary extract (IPA + transliterations)
Attested across 4 languages in the etymology graph.
Where in the world(measured from records)
Recorded in:
No national register we accept counts this name’s bearers, so the page lists where it is found and publishes no figure.
Country figures for a list of names, at full precision, are available under licence rather than by scraping this table (how that works).
Other recorded senses(measured from records)
Cosine is also recorded in 2 other lexicons, as a different name or as an ordinary word. These are senses of the spelling, not of the name above.
In fro, cousin
as a wordkaikki.org Wiktionary extract (IPA + transliterations)
In Latvian, Sadarbība atvērtu sistēmu starpsavienojumu tīklu izveidei Eiropā ("Eureka" programmas projekts; "cooperation for open systems interconnection networking in Europe")
as a wordTēzaurs.lv (Dictionary and Thesaurus of Latvian, AiLab / LU MII)
Ordered by how much of this spelling's record each language holds, so a sense from a language the name is barely used in sits last rather than first.
Evidence(measured from records)
Attested in 2 sources across 2 countries.
| Country | Register | Year | Count | Rank |
|---|---|---|---|---|
| BR Brazil | IBGE — Censo 2022 Nomes no Brasil per-token lookup (v3 API, given+surname) | — | 102 | #62,416 |
| US United States | wru Name Dictionary — US surnames, voter-file supplement (Khanna et al.) | — | — | — |
Register rows as of the 2026-10-09 data build.
Frequently asked questions
- Where does the name Cosine come from?
- In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse. Symbol: cos Recorded by kaikki.org Wiktionary extract (IPA + transliterations).
- What are other forms of the name Cosine?
- In the etymology graph, Sine is a form of the same name in other languages.
- What does the name Cosine mean?
- Recorded meaning: In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse.
- In which country does Cosine have the most bearers?
- Cosine is most frequently recorded in the United States.
What do you want to know about Cosine?
Nobody replies to these one by one, but what readers ask decides what these pages answer next.
Query this name via API
curl -H "X-API-Key: YOUR_KEY" https://api.mondonomo.ai/api/v1/name-graph/cosineThe payload this page is built from: spellings and scripts, countries and languages, related names, and the registers that attest the form. It takes a free API key (1,000 requests a day), which returns what this page shows everyone; the full country table, every register citation and the year-by-year series come with a licensed key, as does bulk access.
About this data
measured from records inferred from the name graph machine-generated
These figures come from the data snapshot of and will change as it is rebuilt.
Statistics are aggregated from the Mondonomo name corpus; related names and etymology are inferred from the name graph; pronunciation and any machine-marked transliterations are model-generated. Read how the numbers are made, including their known failure modes, and where the data comes from.
Reference works we consult — surname dictionaries, official name registers, Wikidata and Wiktionary — are named directly, beside the claims they support. The per-country source counts also include datasets of person records: we publish how many there are and their authority tier, but not their names.
Cite this page Mondonomo, “Cosine”. Data snapshot 2026-10-10.