Μούσαις (Mousais)
Μούσαις is an Ancient Greek form of Μοῦσα, meaning “Mousa — a Muse, goddess of the arts”. It is the dative plural feminine noun.
Found 103 times in the Ancient Greek texts on Socratos.
Where it is used
Diogenes Laertius, Vitae philosophorum 3.1.25: … Μιθραδάτης ὁ Πέρσης ἀνδριάντα Πλάτωνος ἀνέθετο εἰς τὴν Ἀκαδήμειαν καὶ ἐπέγραψε· Μιθραδάτης Ὀροντοβάτου Πέρσης Μούσαις εἰκόνα ἀνέθηκε Πλάτωνος, ἣν Σιλανίων ἐποίησε.
Euripides, Hippolytus 452: ἔχουσιν αὐτοί τ’ εἰσὶν ἐν μούσαις ἀεί,
Source: Socratos (socratos.org), a free reader for Ancient Greek and Latin. Grammar from the Perseus Treebank and Morpheus; dictionary entries from Liddell-Scott-Jones, A Greek-English Lexicon (Perseus Digital Library, CC BY-SA). Counts are from the texts on Socratos.