legationis
legationis is a Latin form of legatio, meaning “embassy, delegation; office of a legate”. It is the genitive singular feminine noun.
Found 75 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 1.7.3: Ubi de eius adventu Helvetii certiores facti sunt, legatos ad eum mittunt nobilissimos civitatis, cuius legationis Nammeius et Verucloetius principem locum obtinebant, qui dicerent sibi esse in animo sine ullo maleficio iter …
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.