Having some characteristics or properties of aluminum; somewhat aluminum-like in nature or appearance.
From alumin- (aluminum) plus -ish (a suffix meaning 'somewhat' or 'like'), creating a descriptive adjective for materials that resemble aluminum but may not be pure aluminum.
The suffix '-ish' is wonderfully informal—'aluminish' would appear in casual scientific discussion to describe a metallic sheen or lightness that suggests aluminum without chemical proof.
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