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Vinony

sine

noun

  1. ratio between the lengths of the opposite side and the hypotenuse in a right triangle
L18435 on Wikidata ↗

Wiktionary

Pronunciation: /saɪn/

noun

Etymology: Etymology tree Proto-Indo-European *sinos Proto-Italic *sinus Latin sinusbor. English sine Borrowed from Latin sinus (“curve, bend; bosom”), a translation of Arabic جَيْب (jayb, “bosom”), a misidentification of the notation جيب (j-y-b), written without vowel diacritics, standing for Arabic جِيبَ (jība, “sine”), in turn from Sanskrit ज्या (jyā, “sine, chord, bowstring”) through the similar Sanskrit जीव (jīva, “sine, chord, life, existence”). Doublet of sinus.

  1. In a right triangle, the ratio of the length of the side opposite an angle to the length of the hypotenuse.