μυριάδων (myriadon)
μυριάδων is an Ancient Greek form of μυριάς, meaning “ten thousand, a myriad”. It is the genitive plural feminine noun.
Found 122 times in the Ancient Greek texts on Socratos.
Where it is used
Thucydides, History of the Peloponnesian War 2.98.3: πορευομένῳ δὲ αὐτῷ ἀπεγίγνετο μὲν οὐδὲν τοῦ στρατοῦ εἰ μή τι νόσῳ, προσεγίγνετο δέ· πολλοὶ γὰρ τῶν αὐτονόμων Θρᾳκῶν ἀπαράκλητοι ἐφ’ ἁρπαγὴν ἠκολούθουν, ὥστε τὸ πᾶν πλῆθος λέγεται οὐκ ἔλασσον πέντε καὶ δέκα μυριάδων γενέσθαι·
All forms of μυριάς (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.