adulteratio
From LSJ
οἵτινες πόλιν μίαν λαβόντες εὐρυπρωκτότεροι πολύ τῆς πόλεος ἀπεχώρησαν ἧς εἷλον τότε → after taking a single city they returned home, with arses much wider than the city they captured
Latin > English (Lewis & Short)
ădultĕrātĭo: ōnis, f. adultero,
I an adulteration, sophistication: croci, Plin. 21, 6, 17, § 32; so prooem. 1, 2.