ae·​ru·​go | \ ēˈ-rü-(ˌ)gō, i-, ī- \
plural -s

Definition of aerugo

: the rust of a metal and especially brass or copper : verdigris

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First Known Use of aerugo

1664, in the meaning defined above

History and Etymology for aerugo

Middle English erugo “mildew, plant rust,” borrowed from Medieval Latin, going back to Latin aerūgō “verdigris,” from aer-, aes “bronze, brass, copper” + -ūgō, suffix marking a surface layer or discoloration

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The first known use of aerugo was in 1664

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Cite this Entry

“Aerugo.” Dictionary, Merriam-Webster, Accessed 5 Dec. 2020.

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