respublica Christiana

Latin

Alternative forms

rēs pūblica Chrīstiāna
Chrīstiāna rēspūblica

Etymology

First attested in Augustine of Hippo: "Omnium enim christianorum una respublica est" ("For there is one commonwealth of all Christians"), De opere monachorum (c. 400 C.E.), 23.33. In early medieval usage, used chiefly to refer to the Byzantine Empire. From c. 9th century applied to the dominion of Frankish kings and emperors in the West. Generalised to refer to the community of all Christian states in the 11th century, which became the predominant meaning from the High Middle Ages on.

Proper noun

rēspūblica Chrīstiāna f sg (genitive reīpūblicae Chrīstiānae); fifth declension (Ecclesiastical Latin)

Christendom, the Christian nations as a political community.
- 1552, Council of Trent, Sacrosancti Concilii Tridentini decreta et canones, Sessio XVI:
  caputque attollere inciperet profligata antea, & afflicta Respublica Christiana
  and the Christian commonwealth, so abandoned and afflicted before, began to lift up its head
(Medieval Latin) The Christian empire, i.e. the Byzantine Empire or the Holy Roman Empire.

Declension

Fifth-declension noun with a first-declension adjective with a first-declension adjective, singular only.

Case	Singular
Nominative	rēspūblica Chrīstiāna
Genitive	reīpūblicae Chrīstiānae
Dative	reīpūblicae Chrīstiānae
Accusative	rempūblicam Chrīstiānam
Ablative	rēpūblicā Chrīstiānā
Vocative	rēspūblica Chrīstiāna

References

Nathan J. Ristuccia (2018) Christianization and Commonwealth in Early Medieval Europe: A Ritual Interpretation, Oxford University Press, pages 16–18