A painting technique or artwork painted on fresh plaster, also known as fresco; wet-plaster mural painting.
From Italian 'al fresco' (in the fresh air/on fresh plaster). The word entered English art terminology directly from Italian during the Renaissance when Italian art techniques were being adopted across Europe.
Renaissance artists discovered that if they painted on wet plaster, the colors would chemically bond with the plaster as it dried, creating incredibly durable murals—some are still vibrant after 500+ years, while oil paintings fade.
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