denominatio
From LSJ
ξένος ὢν ἀκολούθει τοῖς ἐπιχωρίοις νόμοις → as a foreigner, follow the laws of that country | when in Rome, do as the Romans do
Latin > English (Lewis & Short)
dēnōmĭnātĭo: ōnis, f. denomino, rhetor. t. t.,
I the substitution of the name of an object for that of another to which it has some relation, as the name of the cause for that of the effect, of the property for that of the substance, etc.; a metonymy, Auct. Her. 4, 32; cf. Quint. 8, 6, 23 sq., and immutatio.