Of, relating to, or resembling verdigris (the greenish coating on copper); having a green or greenish-copper color.
From Latin erugo (verdigris) plus the adjectival suffix -ous (full of, characterized by). Erugo itself may derive from aes (copper) plus related roots.
When copper oxidizes, it turns that beautiful blue-green color called verdigris—so 'eruginous' describes anything with that distinctive patina that makes old statues beautiful!
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