Definition of patina
1a : a usually green film formed naturally on copper and bronze by long exposure or artificially (as by acids) and often valued aesthetically for its color
b : a surface appearance of something grown beautiful especially with age or use the beautiful patina of this antique table
2 : an appearance or aura that is derived from association, habit, or established character the criminal has acquired a patina of respectability by his friendship with well-known businessmen
3 : a superficial covering or exterior The toast was spread with a patina of butter.
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