sinus

Etymology

From Latin sinus.

Pronunciation

• IPA^(key): /ˈsaɪnəs/
• Rhymes: -aɪnəs

Noun

sinus (plural sinuses)

1. (anatomy) A pouch or cavity in any organ or tissue, especially the paranasal sinus.
2. (botany) A notch or depression between two lobes or teeth in the margin of an organ.
3. (pathology) An abnormal cavity or passage such as a fistula, caused by the destruction of tissue.
4. A bay of the sea; a recess in the shore.

Anagrams

• Sunis, nisus

Etymology

From Latin sinus.

Pronunciation

• (Balearic, Central, Valencian) IPA^(key): /ˈsi.nus/

Noun

sinus m (plural sinus)

1. sine

See also

• tangent
• cosecant
• secant
• cotangent

Further reading

• “sinus” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.

Noun

sinus m

1. (trigonometry) sine

Noun

sinus c (singular definite sinussen, plural indefinite sinusser)

1. (geometry) sine

Pronunciation

• Audio

  (file)

• Hyphenation: si‧nus

Etymology 1

From Latin sinus.

Etymology 2

From Latin sinus.

Etymology

Unadapted borrowing from Latin sinus. Compare the inherited doublet sein.

Pronunciation

• IPA^(key): /si.nys/

Noun

sinus m (plural sinus)

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

Further reading

• “sinus” in le Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

Etymology 1

Of Proto-Indo-European [Term?] origin; akin to Albanian gji ‘breast, bosom’.^[1]

The mathematical sense ‘chord of an arc, sine’ was introduced in the 12th century by Gherardo of Cremona as a semantic loan from Arabic جَيْب‎ (jayb, “chord, sine”) (ultimately a loan from Sanskrit ज्या (jyā, “bowstring”)) by confusion with جَيْب‎ (jayb, “bosom, fold in a garment”).

Etymology 2

From Proto-Indo-European *sh₁ih₂sno-, deverbative of *seh₁y- ‘to sift, strain’ (compare Ancient Greek ἠθέω (ēthéō), Lithuanian sijóti, Serbo-Croatian sȉjati).^[1]

Further reading

• sinus in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• sinus in Charlton T. Lewis (1891) An Elementary Latin Dictionary, New York: Harper & Brothers
• sinus in Charles du Fresne du Cange’s Glossarium Mediæ et Infimæ Latinitatis (augmented edition, 1883–1887)
• sinus in Gaffiot, Félix (1934) Dictionnaire Illustré Latin-Français, Hachette
• Carl Meissner; Henry William Auden (1894) Latin Phrase-Book‎, London: Macmillan and Co.
  • the heart of the city: sinus urbis (Sall. Cat. 52. 35)
    
  • the city is situate on a bay: urbs in sinu sita est
    
  • to rejoice in secret: in sinu gaudere (Tusc. 3. 21. 51)
    
  • to love and make a bosom friend of a person: aliquem in sinu gestare (aliquis est in sinu alicuius) (Ter. Ad. 4. 5. 75)
    
  • (ambiguous) to be driven into the arms of philosophy: in sinum philosophiae compelli
    
• sinus in Harry Thurston Peck, editor (1898) Harper's Dictionary of Classical Antiquities, New York: Harper & Brothers
• sinus in William Smith, editor (1854, 1857) A Dictionary of Greek and Roman Geography, volume 1 & 2, London: Walton and Maberly

Noun

sinus

1. locative singular of sitnu

Etymology

From Latin sinus.

Noun

sinus m (definite singular sinusen, indefinite plural sinuser, definite plural sinusene)

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

References

• “sinus” in The Bokmål Dictionary.

Etymology

From Latin sinus.

Noun

sinus m (definite singular sinusen, indefinite plural sinusar, definite plural sinusane)

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

References

• “sinus” in The Nynorsk Dictionary.

Pronunciation

• audio

  (file)

Noun

sinus m inan

1. sine

Etymology

From French sinus

Noun

sinus n (plural sinusuri)

1. sine (trigonometric function)

Pronoun

sinus

1. inessive of sinä