Etymology

aerugo

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Today it means: Metallic rust, particularly of brass or copper; verdigris; patina. Full definition →

Latin aerūgō
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The story

  1. Latin · borrowed fromaerūgō
  2. English todayaerugo

Borrowed from Latin aerūgō, from aes (“copper, bronze, brass”).

Etymology from Wiktionary, CC BY-SA 4.0.