epistulae
epistulae is a Latin form of epistula, meaning “letter”. It is the nominative plural feminine noun.
Found 138 times in the Latin texts on Socratos.
Where it is used
Cicero, De Officiis 2.48: … dicimus); sed tamen difficile dictu est, quantopere conciliet animos comitas affabilitasque sermonis. Exstant epistulae et Philippi ad Alexandrum et Antipatri ad Cassandrum et Antigoni ad Philippum filium, trium prudentissimorum …
Pliny the Younger, Epistulae 10.66.2: Epistulae sane sunt Domitiani ad Avidium Nigrinum et Armenium Brocchum, quae fortasse debeant observari: sed inter eas …
All forms of epistula (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.