nigricostus

== Latin == === Etymology === New Latin; from niger (“black”) +‎ costa (“rib”), changed to the first and second declension. === Pronunciation === (Classical Latin) IPA(key): [nɪ.ɡrɪˈkɔs.tʊs] (modern Italianate Ecclesiastical) IPA(key): [ni.ɡriˈkɔs.tus] === Adjective === nigricostus (feminine nigricosta, neuter nigricostum); first/second-declension adjective (New Latin) having black ribs ==== Usage notes ==== Used almost exclusively as a taxonomic epithet and thus not normally in inflected forms other than the nominative singular. ==== Declension ==== First/second-declension adjective.