E-rūʹgi·noŭs, a.
a. [Lat. æruginosus, from ærugo, rust, from æs, any crude metal; Pr. eruginos, Sp. & Pg. eruginoso, Fr. érugineux.] Partaking of the substance or nature of copper, or the rust of copper; resembling rust.
a. [Lat. æruginosus, from ærugo, rust, from æs, any crude metal; Pr. eruginos, Sp. & Pg. eruginoso, Fr. érugineux.] Partaking of the substance or nature of copper, or the rust of copper; resembling rust.