Etymology

aridity

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Today it means: A long-term lack of rainfall or moisture. Full definition →

Latin āriditās ← Proto-Indo-European *dʰeh₁- ← Proto-Italic *āzēō
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The story

  1. Proto-Indo-European*h₂eHs-
  2. Proto-Indo-European*h₂eHs-eh₁yeti
  3. Proto-Italic*āzēō
  4. Latināreō
  5. Proto-Indo-European*dʰeh₁-
  6. Latināridus
  7. Latināriditās
  8. English todayaridity

Borrowed from Latin āriditās (“dryness”); equivalent to arid + -ity.

Etymology from Wiktionary, CC BY-SA 4.0.