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obrussa , ae (pure Gr. collat. form = χρυσίον ὄβρυζον, obrȳzum aurum , Vulg. 2 Par. 3, 5; Isid. 16, 18, 2), f., = ὄβρυζον,
I.the testing or assaying of gold by fire in a cupel (class.).
II. Trop., a test, touchstone, proof: “adhibenda tamquam obrussa ratio,Cic. Brut. 74, 258: “sic verus ille animus probatur: haec ejus obrussa est,this is its touchstone, its test, Sen. Ep. 13, 1: “si omnia argumenta ad obrussam coeperimus exigere,to put to the proof, test accurately, id. Q. N. 4, 5, 1.
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  • Cross-references in general dictionaries from this page (5):
    • Old Testament, 2 Chronicles, 3.5
    • Suetonius, Nero, 44
    • Pliny the Elder, Naturalis Historia, 33.59
    • Seneca, Epistulae, 13.1
    • Cicero, Brutus, 74.258
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