Thessaliae
Thessaliae is a Latin form of Thessalia, meaning “Thessaly, region of northern Greece”. It is the nominative plural feminine noun or vocative plural feminine noun or dative singular feminine noun or genitive singular feminine noun.
Found 43 times in the Latin texts on Socratos.
Where it is used
Caesar, De Bello Civili 3.79: … ix mi horarum spatio antecedens hostium beneficio periculum vitavit et ad Aeginium, quod est oppidum obiectum Thessaliae, Caesari venienti occurrit.
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.