sinus

See also: Sinus and sinüs

English

Etymology

From Latin sinus.

Pronunciation

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

Noun

Wikipedia

sinus (plural sinuses)

1. (anatomy) A pouch or cavity in any organ or tissue, especially the paranasal sinus.
2. (pathology) An abnormal cavity or passage such as a fistula, caused by the destruction of tissue.
3. A bay of the sea; a recess in the shore.

Derived terms

• sinusitis
• ethmoid sinus
• frontal sinus
• maxillary sinus
• sphenoid sinus
• paranasal sinus

Translations

pouch or cavity in any organ or tissue

• Afrikaans: sinus, sinusse pl
• Arabic: جيب الأنف m (jayb al-'unf)

  Egyptian Arabic: جيوب أنفية f pl (geyuub ʔanfeya)

• Asturian: senu (ast) m
• Catalan: si (ca) m
• Chinese:

  Mandarin: 鼻竇, 鼻窦 (zh) (bídòu)

• Esperanto: sinuso
• Finnish: ontelo (fi)
• French: sinus (fr) m
• Galician: seo (gl) m

• German: Sinus (de) m, (paranasal) Nasennebenhöhle f
• Hungarian: üreg (hu)
• Ido: sinuso (io)
• Italian: seno (it) m
• Japanese: 副鼻腔 (ふくびこう, fukubikō)
• Polish: zatoka (pl) f
• Portuguese: seio (pt) m
• Romanian: sinus (ro) n
• Russian: пазуха (ru) f (pázuxa)
• Spanish: seno (es) m
• Volapük: sinud

abnormal cavity or passage caused by the destruction of tissue

• Finnish: avanne (fi)

• Russian: свищ (ru) m (sviš'), фистула (ru) f (fístula)

The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.

Translations to be checked

• French: sinus paranasal m
• German: Nasennebenhöhle f

Anagrams

• nisus, Sunis

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Catalan

Noun

sinus m (plural sinus)

1. sine

Derived terms

• cosinus

See also

• tangent
• cosecant
• secant
• cotangent

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Czech

Noun

sinus m

1. (trigonometry) sine

Related terms

• kosinus m

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Dutch

Pronunciation

Hyphenation: si‧nus

Etymology 1

Wikipedia ^nl

Noun

sinus m (plural sinussen, diminutive sinusje n)

1. (trigonometry) sine

Etymology 2

Noun

sinus m (plural sinussen, diminutive sinusje n)

1. (anatomy) sinus

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French

Pronunciation

• IPA^(key): /si.nys/

Noun

sinus m (plural sinus)

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

See also

• cosécante
• cosinus
• cotangente
• sécante
• tangente

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Latin

Pronunciation

• (Classical) IPA^(key): /ˈsi.nus/

Etymology 1

Of Proto-Indo-European origin.

Noun

sinus m (genitive sinūs); fourth declension

1. a hollow, cavity
2. curve, fold, winding
3. gulf, bay
4. bosom
5. fold of the toga over the breast, pocket, lap
6. heart, secret feelings

Inflection

Fourth declension.

Number	Singular	Plural
nominative	sinus	sinūs
genitive	sinūs	sinuum
dative	sinuī	sinibus
accusative	sinum	sinūs
ablative	sinū	sinibus
vocative	sinus	sinūs

Synonyms

• (bosom): pectus

Derived terms

• sinuōsē
• sinuōsus

Related terms

• sinuō

Descendants

• Aromanian: sin
• English: sinus
• French: sein
• Friulian: sen
• Italian: seno

• Portuguese: seio
• Romanian: sân
• Romansch: sain
• Sardinian: sinu
• Spanish: seno

Etymology 2

Medieval Latin, introduced in the 12th century by Gherardo of Cremona as a translation of Arabic جيب (jiba, “chord”) (ultimately a loan from Sanskrit ज्या (jyā, “bowstring”)) by confusion with جيب (jaib, “bosom, fold in a garment”).

Noun

sinus m (genitive sinūs); fourth declension

1. (mathematics) chord of an arc, sine

Inflection

Fourth declension.

Number	Singular	Plural
nominative	sinus	sinūs
genitive	sinūs	sinuum
dative	sinuī	sinibus
accusative	sinum	sinūs
ablative	sinū	sinibus
vocative	sinus	sinūs

Descendants

• English: sine

Etymology 3

From sinus (“a hollow, cavity”).

Noun

sīnus m (genitive sīnī); second declension

1. a large bowl

Inflection

Second declension.

Number	Singular	Plural
nominative	sīnus	sīnī
genitive	sīnī	sīnōrum
dative	sīnō	sīnīs
accusative	sīnum	sīnōs
ablative	sīnō	sīnīs
vocative	sīne	sīnī

Alternative forms

• sīnum

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Norwegian

Etymology

From Latin.

Noun

sinus m

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

Inflection

    Inflection of sinus

	indefinite singular	definite singular	indefinite plural	definite plural
Bokmål m	sinus	sinusen	sinuser	sinusene
Nynorsk m	sinus	sinusen	sinusar	sinusane

Related terms

• cosinus

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Polish

Pronunciation

• audio

  (file)

Noun

sinus m

1. sine

Declension

    declension of sinus

	singular	plural
nominative	sinus	sinusy
genitive	sinusa	sinusów
dative	sinusowi	sinusom
accusative	sinus	sinusy
instrumental	sinusem	sinusami
locative	sinusie	sinusach
vocative	sinusie	sinusy

Derived terms

• sinusowy, sinusoida

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Romanian

Noun

sinus n

1. sine (trigonometric function)

This Romanian entry was created from the translations listed at sine. It may be less reliable than other entries, and may be missing parts of speech or additional senses. Please also see sinus in the Romanian Wiktionary. This notice will be removed when the entry is checked. (more information) August 2009