LATIN DICTIONARYLexicon Latīnum
adjectivethird-declension two-termination adjective

bonōniēnsis

bonōniēnsis (neuter bonōniēnse)
Classical[bɔ.noː.niˈẽː.sɪs]Ecclesiastical[bo.no.niˈɛn.sis]

Meaning

  1. two terminationof or pertaining to the city of Bonōnia (modern-day Bologna, in Italy); Bolognese, Bononian
    Atque etiam apud socios et Latinos oratores habiti sunt […] C. Rusticelius Bononiensis, is quidem et exercitatus et natura volubilisThere have also been orators among the allies and the Latins: […] C. Rusticellus of Bononia, a man both skilled and of voluble disposition.46 BCE, Cicero, Brutus 46.169
    dn̄s petrus de creſcētijs ciuis bonon̄ · ſeip̄m ad oīa ſemꝑ mandata obſeq̓oſa paratū.Sir Pietro de' Crescenzi, citizen of Bologna, always ready for all obsequious commands.1304–1309, Pietro De' Crescenzi, “Petri de Crescentiis civis Bononiensis epistola in librum commodorum ruralium [Letter of Pietro de' Crescenzi, citizen of Bologna, in the book of agricultural advantages]”, in Rūrālium commodōrum librī XII [The 12 books of agricultural advantages] (overall work in Medieval Latin), page 13; republished (manuscript), 1471:

Declension

singular
formmasculinefeminineneuter
nominativebonōniēnsisbonōniēnsisbonōniēnse
genitivebonōniēnsisbonōniēnsisbonōniēnsis
dativebonōniēnsībonōniēnsībonōniēnsī
accusativebonōniēnsembonōniēnsembonōniēnse
ablativebonōniēnsībonōniēnsībonōniēnsī
vocativebonōniēnsisbonōniēnsisbonōniēnse
plural
formmasculinefeminineneuter
nominativebonōniēnsēsbonōniēnsēsbonōniēnsia
genitivebonōniēnsiumbonōniēnsiumbonōniēnsium
dativebonōniēnsibusbonōniēnsibusbonōniēnsibus
accusativebonōniēnsīs
bonōniēnsēs
bonōniēnsīs
bonōniēnsēs
bonōniēnsia
ablativebonōniēnsibusbonōniēnsibusbonōniēnsibus
vocativebonōniēnsēsbonōniēnsēsbonōniēnsia

Origins

Bonōnia (“Bologna”, toponym) + -ēnsis (“-(i)an”, demonymic adjective suffix)

Quick answers

What does bonōniēnsis mean in Latin?
bonōniēnsis, a adjective, means “of or pertaining to the city of Bonōnia (modern-day Bologna, in Italy); Bolognese, Bononian”.
How do you pronounce bonōniēnsis?
In classical Latin, [bɔ.noː.niˈẽː.sɪs]; in ecclesiastical (church) Latin, [bo.no.niˈɛn.sis].