μυρίαις (myriais)
μυρίαις is an Ancient Greek form of μυρίος, meaning “countless; ten thousand”. It is the dative plural feminine adjective.
Found 30 times in the Ancient Greek texts on Socratos.
Where it is used
Euripides, The Phoenician Women 305: χρόνῳ σὸν ὄμμα μυρίαις τʼ ἐν ἁμέραις
All forms of μυρίος (declension table)
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.