Ἐάν γάρ ἀποδιδῷ τις τί ἐστιν αὐτῶν ἑκατέρῳ τό ζῴῳ εἶναι, ἴδιον ἑκατέρου λόγον ἀποδώσει (Aristotle, Categoriae 1a) → For if anyone gives an explanation of what it is for each of them to be an animal, he will give the same explanation of each
Use Ar. and P. μέδιμνος, ὁ (Dem. 467) (equals about a bushel and a half).