Etymology

osteopetrosis

O1S1T1E1O1P3E1T1R1O1S1I1S1

Today it means: A rare hereditary disorder characterized by hard, dense bones. Full definition →

Ancient Greek πέτρα (pétra) ← English osteo- ← Proto-Indo-European *h₃ésth₁
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The story

  1. Proto-Indo-European*h₃ésth₁
  2. Ancient Greekὀστέον (ostéon)
  3. Englishosteo-
  4. Ancient Greekπέτρα (pétra)
  5. English todayosteopetrosis

From osteo- + Ancient Greek πέτρα (pétra, “rock”) + English -osis.

Etymology from Wiktionary, CC BY-SA 4.0.