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patina
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Pronunciation
change
(
UK
)
IPA
(
key
)
:
/ˈpætɪnə/
(
US
)
IPA
(
key
)
:
/pəˈtiː.nə/
or
/ˈpæ.tɪ.nə/
Noun
change
Singular
patina
Plural
patinas
(
chemistry
)
Patina
is a coating of various
chemical
compounds
such as
oxides
or
carbonates
formed on the surface of metal during
exposure
to weathering.