noun pl. patinae -·nae′ (-nē′)

Etymology: L

noun

1. a fine crust or film on bronze or copper, usually green or greenish-blue, formed by natural oxidation and often valued as being ornamental
2. any thin coating or color change resulting from age, as on old wood or silver

Etymology: Fr < It, orig., tarnish (on a metal plate), prob. < L, pan: see patella