Etymology

ozone

O1Z10O1N1E1

Today it means: An allotrope of oxygen (symbol O₃) having three atoms in the molecule instead of the usual two; it is a toxic gas, generated from oxygen by electrical discharge. Full definition →

German Ozon ← Ancient Greek ὄζον
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The story

  1. Ancient Greek · derived fromὄζον
  2. German · borrowed fromOzon
  3. English todayozone

From German Ozon, coined 1840 by Christian Friedrich Schönbein, from Ancient Greek ὄζον (ózon), neuter participle of ὄζω (ózō, “I smell”), in reference to its pungent odour. The “fresh air” sense is from an erroneous former belief that seaweed contains and releases ozone.

Etymology from Wiktionary, CC BY-SA 4.0.