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sinus

From Wiktionary, the free dictionary

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See also: Sinus, sínus, and sinüs

English

English Wikipedia has an article on:
Wikipedia

Etymology

Learned borrowing from Latin sinus (“a bent surface, curve, hollow”). Doublet of sine.

Pronunciation

Noun

sinus (plural sinuses)

  1. (anatomy, zootomy) A pouch or cavity in a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities (the paranasal sinus).
    Hyponyms: ethmoid sinus, frontal sinus, maxillary sinus, paranasal sinus, piriform sinus, Rokitansky-Aschoff sinus, sphenoid sinus
  2. (anatomy) An irregular venous or lymphatic cavity, reservoir, or dilated vessel.
    Hyponyms: carotid sinus, cavernous sinus, coronary sinus, lateral sinus, petrosal sinus, sagittal sinus, sigmoid sinus, straight sinus, transverse sinus, venous sinus
    1. (physiology, attributive) Relating to or denoting the sinoatrial node of the heart or its function of regulating the heartbeat.
  3. (pathology) An abnormal cavity or passage such as a fistula, leading from a deep-seated infection and discharging pus to the surface.
  4. (botany) A rounded notch or depression between two lobes or teeth in the margin of a leaf or petal.
  5. (geography) A bay of the sea; a recess in the shore.
  6. (trigonometry) Synonym of sine.
    • 1884 November 29, “Aerial Navigation”, in Scientific American: A Weekly Journal of Practical Information, Art, Science, Mechanics, Chemistry, and Manufactures, volume LI, number 22, New York, N.Y.: Munn & Co., translation of original by Victor Tatin in La Nature, page 342, column 1:
      So, in the helicopteron, as the helix is at the same time a sustaining plane, it should be likened to a surface moving horizontally, and in which, consequenty, the resistance to motion will be to the lifting power as the sinus is to the cosinus of the angle formed by such plane with the horizon.
    • 1996, Pentti Zetterberg, Matti Eronen, Markus Lindholm, “Construction of a 7500-Year Tree-Ring Record for Scots Pine (Pinus sylvestris, L.) in Northern Fennoscandia and its Application to Growth Variation and Palaeoclimatic Studies”, in Heinrich Spiecker, Kari Mielikäinen, Michael Köhl, Jens Peter Skovsgaard, editors, Growth Trends in European Forests (European Forest Institute Research Report; No. 5), Springer-Verlag Berlin Heidelberg, →ISBN, page 15:
      The variations are described in terms of cycles of sinuses and cosinuses.
    • 2007, Vladimir G. Ivancevic, Tijana T. Ivancevic, “Introduction: Human and Computational Mind”, in Computational Mind: A Complex Dynamics Perspective (Studies in Computational Intelligence; 60), Springer-Verlag Berlin Heidelberg, →ISBN, →LCCN, section 1 (Natural Intelligence and Human Mind), pages 60–61:
      Basically, the rotation of the matrix of the factor loadings L represents its post-multiplication, i.e. L* = LO by the rotation matrix O, which itself resembles one of the matrices included in the classical rotational Lie groups SO(m) (containing the specific m–fold combination of sinuses and cosinuses.

Derived terms

Translations

References

Anagrams

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Albanian

Etymology

Learned borrowing from Latin sinus. Doublet of gji.

Noun

sinus m

  1. (trigonometry) sine

Further reading

  • “sinus”, in FGJSH: Fjalor i gjuhës shqipe [Dictionary of the Albanian language] (in Albanian), 2006
  • FGJSSH: Fjalor i gjuhës së sotme shqipe [Dictionary of the modern Albanian language]‎, 1980

Catalan

Etymology

Learned borrowing from Latin sinus.

Pronunciation

Noun

sinus m (invariable)

  1. sine

Derived terms

See also

Further reading

Czech

Etymology

Learned borrowing from Latin sinus.

Pronunciation

  • IPA(key): [ˈsɪnus]
  • Hyphenation: si‧nus

Noun

sinus m inan

  1. (trigonometry) sine
  2. (anatomy) sinus

Declension

Declension of sinus (hard masculine inanimate foreign)
More information singular, plural ...

Further reading

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Danish

Etymology

Learned borrowing from Latin sinus.

Noun

sinus c (singular definite sinussen, plural indefinite sinusser)

  1. (trigonometry) sine

Dutch

Dutch Wikipedia has an article on:
Wikipedia nl

Etymology

Learned borrowing from Latin sinus.

Pronunciation

  • IPA(key): /ˈsi.nʏs/
  • Audio:(file)
  • Hyphenation: si‧nus
  • Rhymes: -inʏs

Noun

sinus m (plural sinussen, diminutive sinusje n)

  1. (trigonometry) sine
  2. sinus

Descendants

  • Afrikaans: sinus, sinusse
  • → Indonesian: sinus
  • → Malay: sinus
  • → Papiamentu: sinùs

French

Etymology

Learned borrowing from Latin sinus. Doublet of sein.

Pronunciation

Noun

sinus m (invariable)

  1. (anatomy) sinus
  2. (trigonometry) sine
    Coordinate terms: cosinus, tangente, cotangente, sécante, cosécante

Derived terms

Descendants

Further reading

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Indonesian

Indonesian Wikipedia has an article on:
Wikipedia id

Etymology

Borrowed from Dutch sinus, from Latin sinus.

Pronunciation

  • IPA(key): [ˈsinʊs]
  • Rhymes: -nʊs, -ʊs, -s
  • Hyphenation: si‧nus

Noun

sinus (plural sinus-sinus)

  1. sinus:
    1. (anatomy) a pouch or cavity in a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities (the paranasal sinus)
    2. (pathology) an abnormal cavity or passage such as a fistula, leading from a deep-seated infection and discharging pus to the surface
  2. (trigonometry) sine: in a right triangle, the ratio of the length of the side opposite an angle to the length of the hypotenuse

Derived terms

  • sinus etmoid
  • sinus frontalis
  • sinus maksila
  • sinus maksilaris
  • sinus stenoid

Further reading

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Latin

Northern Sami

Norwegian Bokmål

Norwegian Nynorsk

Polish

Romanian

Swedish

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