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sinus

Pronunciation: [ˈsɪ.nʊs]

“sinus” is a Latin word. Its 13 meanings in English:

noun

  1. a bent surface; a curve, fold, hollow
  2. a purse, money (which was carried in the bosom of the toga)
  3. a garment
  4. the bosom, breast
  5. the bosom for love, protection, asylum
  6. the interior, inmost part of a thing
  7. a power, possession of someone
  8. a hiding place, place of concealment; a secret feeling
  9. a gulf, bay, bight
  10. the land lying on or a point of land that helps to form a gulf
  11. a basin, hollow, valley
  12. a fjord
  13. the chord of an arc; a sine

Etymology

Inherited from Proto-Italic *sinus, from Proto-Indo-European *sinos. Akin to Albanian gji (“breast, bosom”). The mathematical sense “chord of an arc, sine” was introduced in the 12th century by Gherardo of Cremona as a semantic loan from Arabic جِيبَ (jība, “chord, sine”) (ultimately a loan from Sanskrit ज्या (jyā, “bowstring”)) by confusion with جَيْب (jayb, “bosom, fold in a garment”).

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Definitions are from Wiktionary, extracted by Kaikki.org, and are available under the CC BY-SA 4.0 licence.