Μ
From LSJ
ἀναγκαίως δ' ἔχει βίον θερίζειν ὥστε κάρπιμον στάχυν, καὶ τὸν μὲν εἶναι, τὸν δὲ μή → But it is our inevitable lot to harvest life like a fruitful crop, for one of us to live, one not. (Euripides, Hypsipyle fr. 60.94ff.)
English (LSJ)
μ, μῦ, τό, Ionic μῶ Democr. 19; indecl., thirteenth (later twelfth) letter of the Gr. alphabet; as numeral μʹ = 40, but ͵μ = 40 000. — In Inscrr. M stands for μύριοι or μυριάς; hence 𐅇 for πεντακισμύριοι or πέντε μυριάδες, 50 000.
Greek Monolingual
μ
βλ. μι.
Russian (Dvoretsky)
Μ: μ (τὸ μῦ) мю (12-я буква греч. алфавита): μʹ = 40; ͵μ = 40000; Μ = μυριάς (10000).