Etymograph

English

sine

Sine comes from Latin sinus ‘curve, bend’, and goes back to Proto-Indo-European *sinos.

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sinosreconstructed
  2. Proto-Italicc. 1500–700 BCE*sinusreconstructed
  3. Latinc. 75 BCE–200 CEsinus‘curve, bend’
  4. Englishtodaysine

attested reconstructed ? uncertain or disputed

Lineage

  1. Proto-Indo-Europeanc. 4500–2500 BCE*sinosreconstructed
  2. Proto-Italicc. 1500–700 BCE*sinusreconstructed
  3. Latinc. 75 BCE–200 CEsinus‘curve, bend’
  4. Englishtodaysine

Linked words

through Latin sinus ‘curve, bend’

sinus, insinuation, insinuate, sinuous, 3 more

Today it means

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

Language periods are conventional ranges, not dates for this word.

Etymograph / Proto-Indo-European *sinos / sine

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