defectionis
defectionis is a Latin form of defectio, meaning “desertion, revolt; failure, weakness; eclipse”. It is the genitive singular feminine noun.
Found 57 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Gallico 5.26.1: Diebus circiter XV, quibus in hiberna ventum est, initium repentini tumultus ac defectionis ortum est ab Ambiorige et Catuvolco;
All forms of defectio (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.