Etymology

sinical

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Today it means: of, relating to, or constructed using sines Full definition →

English sine ← Latin sinus ← Arabic جِيبَ (jība)
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The story

  1. Proto-Indo-European*sinos
  2. Proto-Italic*sinus
  3. Arabicجِيبَ (jība)
  4. Latinsinus
  5. Englishsine
  6. English todaysinical

From sine + -ical.

Etymology from Wiktionary, CC BY-SA 4.0.