undemillesimus

== Latin == === Etymology === From ūndēmīlle (“999”) +‎ -ēsimus (“-th”). === Pronunciation === (Classical Latin) IPA(key): [uːn.deː.miːlˈleː.sɪ.mʊs] (modern Italianate Ecclesiastical) IPA(key): [un.de.milˈlɛː.s̬i.mus] === Numeral === ūndēmīllēsimus (feminine ūndēmīllēsima, neuter ūndēmīllēsimum); first/second-declension numeral 999th ==== Declension ==== First/second-declension adjective.