arccosine

A1R1C3C3O1S1I1N1E1

noun

Any of several single-valued or multivalued functions that are inverses of the cosine function.

Similar
anticosineinverse cosinearccoscos-1arc cosine
OriginEnglish cosine ← Latin sinus ← Arabic جِيبَ (jība) →
Scrabble 13
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Meanings

nounarccosine (plural arccosines)

plural arccosines

  1. mathematicsAny of several single-valued or multivalued functions that are inverses of the cosine function.

    Synonyms: anticosine, inverse cosine, arccos, cos-1

Synonyms & antonyms

nounAny of several single-valued or multivalued functions that are inverses of the cosine function.

Similar
anticosineinverse cosinearccoscos-1

More synonyms by meaning

nounthe inverse function of the cosine; the angle that has a cosine equal to a given number

Similar
arc cosinearccosinverse cosine
Broader
trigonometric functioncircular function
Also see
anticosineinverse cosine

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*h₂erkʷ-
  2. Proto-Indo-European*h₂erkʷos
  3. Proto-Italic*arkuos
  4. Latinarcus
  5. Englisharc-
  6. Englishco-
  7. Proto-Indo-European*sinos
  8. Proto-Italic*sinus
  9. Arabicجِيبَ (jība)
  10. Latinsinus
  11. Englishsine
  12. Englishcosine
  13. Englisharccosine

From arc- + cosine.

Full word history & related roots →

Translations

Catalan arccosinus
  • arccosinusinverse of the cosine function
Chinese Mandarin 反餘弦 /反余弦
  • 反餘弦 /反余弦 (fǎnyúxián)inverse of the cosine function
Czech arkuskosinus
  • arkuskosinusinverse of the cosine function
Dutch arccosinus
  • arccosinusinverse of the cosine function
Finnish arkuskosini
  • arkuskosiniinverse of the cosine function
French arc cosinus
  • arc cosinusinverse of the cosine function
German Arkuskosinus
  • Arkuskosinusinverse of the cosine function
Hungarian arkuszkoszinusz
  • arkuszkoszinuszinverse of the cosine function
Italian arcocoseno
  • arcocosenoinverse of the cosine function
Japanese アークコサイン
  • アークコサイン (ākukosain)inverse of the cosine function
Korean 아크코사인
  • 아크코사인 (akeukosain)inverse of the cosine function
Māori whenu kōaro
  • whenu kōaroinverse of the cosine function
Portuguese arco cosseno
  • arco cossenoinverse of the cosine function
Romanian arccosinus
  • arccosinusinverse of the cosine function
Russian аркко́синус
  • аркко́синус (arkkósinus)inverse of the cosine function
Spanish arcocoseno
  • arcocosenoinverse of the cosine function
Cite this entry
APA

arccosine. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/arccosine

MLA

“arccosine.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/arccosine. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “arccosine,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/arccosine.

Source: arccosine on Wiktionary, CC BY-SA 4.0.