Etymology

tachistoscope

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Today it means: A device that displays a series of brief images; used by psychologists to investigate perception, memory and learning. Full definition →

Ancient Greek σκοπέω (skopéō) ← Proto-Hellenic *sképt͏̌omai ← Proto-Indo-European *spéḱyeti
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The story

  1. Ancient Greekτάχιστος (tákhistos)
  2. Proto-Indo-European*speḱ-
  3. Proto-Indo-European*spéḱyeti
  4. Proto-Hellenic*sképt͏̌omai
  5. Ancient Greekσκέπτομαι (sképtomai)
  6. Ancient Greekσκοπός (skopós)
  7. Ancient Greekσκοπέω (skopéō)
  8. English todaytachistoscope

From Ancient Greek τάχιστος (tákhistos, “most fast”) + English -scope.

Etymology from Wiktionary, CC BY-SA 4.0.