Etymology

arcsecant

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Today it means: function that is the compositional inverse of the secant function. Symbol: arcsec Full definition →

English secant ← Latin secāns ← Proto-Italic *sekaō
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The story

  1. Proto-Indo-European*h₂erkʷ-
  2. Proto-Indo-European*h₂erkʷos
  3. Proto-Italic*arkuos
  4. Latinarcus
  5. Englisharc-
  6. Proto-Indo-European*sek-
  7. Proto-Indo-European*sékh₁yeti
  8. Proto-Italic*sekaō
  9. Latinsecō
  10. Latinsecāns
  11. Englishsecant
  12. English todayarcsecant

From arc- + secant.

Etymology from Wiktionary, CC BY-SA 4.0.