oxidar bedeutet auf Englisch

oxidize [oxidized, oxidizing, oxidizes]▼(to combine with oxygen)
verb
[UK: ˈɒk.sɪ.daɪz] [US: ˈɑːk.sə.ˌdaɪz]

tarnish [tarnished, tarnishing, tarnishes]▼(to oxidize or discolor due to oxidation)
verb
[UK: ˈtɑː.nɪʃ] [US: ˈtɑːr.ˌnɪʃ]