Etymology

index

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Today it means: An alphabetical listing of items and their location. Full definition →

Latin index ← Proto-Italic *deikō ← Proto-Indo-European *déyḱeti
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The story

  1. Proto-Indo-European*h₁én
  2. Proto-Italic*en
  3. Old Latinen
  4. Latinin
  5. Proto-Indo-European*deyḱ-
  6. Proto-Indo-European*déyḱeti
  7. Proto-Italic*deikō
  8. Latindīcō
  9. Latinindex
  10. English todayindex

From Latin index (“a discoverer, informer, spy; of things, an indicator, the forefinger, a title, superscription”), from indicō (“point out, show”); see indicate.

Etymology from Wiktionary, CC BY-SA 4.0.