aeruginosus

From aerūgō (“rust of copper, verdigris”) +‎ -ōsus.

• (Classical) IPA^(key): /ae̯.ruː.ɡiˈnoː.sus/, [äe̯ruːɡɪˈnoːs̠ʊs̠]
• (modern Italianate Ecclesiastical) IPA^(key): /e.ru.d͡ʒiˈno.sus/, [erud͡ʒiˈnɔːs̬us]

aerūginōsus (feminine aerūginōsa, neuter aerūginōsum); first/second-declension adjective

1. rusty, covered with copper rust
   • Seneca the Younger, De Brevitate Vitae 10.12

     Illum tu otiosum vocas qui Corinthia, paucorum furore pretiosa, anxia suptilitate concinnat et maiorem dierum partem in aeruginosis lamellis consumit?

     Would you say that that man is at leisure who arranges with finical care his Corinthian bronzes, that the mania of a few makes costly, and spends the greater part of each day upon rusty bits of copper? — J. Basore, 1932 translation

   • Seneca the Elder, Controversiae, I.2.21

     […] ut Bassus Iulius qui dixit: ‘extra portam hanc virginem’ et: ‘ostende istam aeruginosam manum’ [...]

     […] like Bassus Julius, who said: ‘this maiden outside of the gate’ and ‘show that rusty hand of yours’ [...]

First/second-declension adjective.

• “aeruginosus”, in Charlton T. Lewis and Charles Short (1879) A Latin Dictionary, Oxford: Clarendon Press
• aeruginosus in Gaffiot, Félix (1934) Dictionnaire illustré latin-français, Hachette.