Etymology

leprosy

L1E1P3R1O1S1Y4

Today it means: An infectious disease caused by the bacterium Mycobacterium leprae, gradually producing nerve damage and patches of skin necrosis and historically handled by permanently quarantining its sufferers. Full definition →

Norman leprosie ← Middle French leprosie ← Medieval Latin leprōsia
Ask AI about its historyChatGPTClaudePerplexityGoogle AIGrok

The story

  1. Hebrew · derived fromצרעת“tzaraath”
  2. Medieval Latin · derived fromleprōsia
  3. Middle French · derived fromleprosie“leprosy & similar skin diseases”
  4. Norman · borrowed fromleprosie
  5. English todayleprosy

From Norman leprosie, from Middle French leprosie (“leprosy & similar skin diseases”), probably from leprous (“leprous”) + -ie (“-y”) but possibly from Medieval Latin leprōsia (leprōsus + -ia) although this only historically attested in reference to leprosariums. The shift of sense from psoriasis to Hansen's disease occurred in large part from the use of λέπρα (lépra) to translate Hebrew צרעת (“tzaraath”) in the Septuagint and its subsequent use in the New Testament and Late Latin.

Words from the same roots

Medieval Latinleprōsia all →

Hebrewצרעת all →

Etymology from Wiktionary, CC BY-SA 4.0.