legationibus
legationibus is a Latin form of legatio, meaning “embassy, delegation; office of a legate”. It is the ablative plural feminine noun.
Found 50 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 5.21.1: Trinobantibus defensis atque ab omni militum iniuria prohibitis Cenimagni, Segontiaci, Ancalites, Bibroci, Cassi legationibus missis sese Caesari dedunt.
All forms of legatio (declension table)
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Lewis & Short, A Latin Dictionary (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.