rubidus

== English == === Etymology === From Latin rubidus. === Noun === rubidus (plural rubiduses) A butterfly, hybrid between the viceroy (Limenitis archippus) and the red-spotted purple (Limenitis arthemis astyanax). == Latin == === Etymology 1 === From Proto-Indo-European *h₁rewdʰ- (“red”) +‎ -idus. The different ablaut grade from rubeō suggests that the adjective is not directly derived from the stative verb. Probably most closely related to rōbus and rōbīgō. ==== Pronunciation ==== (Classical Latin) IPA(key): [ˈruː.bɪ.dʊs] (modern Italianate Ecclesiastical) IPA(key): [ˈruː.bi.dus] ==== Adjective ==== rūbidus (feminine rūbida, neuter rūbidum); first/second-declension adjective dark red (of bread, precise meaning uncertain) red-brown (or) twice-baked (or) partially baked ===== Declension ===== First/second-declension adjective. === Etymology 2 === From rubeō and -idus. Appears to have a different meaning from rūbidus. Attested since the 1st century AD alongside the proliferation of derived color terms with -idus. ==== Pronunciation ==== (Classical Latin) IPA(key): [ˈrʊ.bɪ.dʊs] (modern Italianate Ecclesiastical) IPA(key): [ˈruː.bi.dus] ==== Adjective ==== rubidus (feminine rubida, neuter rubidum); first/second-declension adjective red in color, appearing red ===== Declension ===== First/second-declension adjective. ===== Related terms ===== rubor ==== See also ==== === References === === Further reading === “rubidus”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press “rubidus”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.