σύμμετρον
From LSJ
δός μοι πᾷ στῶ καὶ τὰν γᾶν κινήσω → give me a place to stand and I will move the earth, give me a place to stand and I'll move the earth, give me the place to stand and I shall move the earth, give me a place to stand and with a lever I will move the whole world, give me a firm spot to stand and I will move the world, give me a lever and a place to stand and I will move the earth, give me a fulcrum and I shall move the world
Russian (Dvoretsky)
σύμμετρον: τό соразмерность, (правильная) мера (τὸ ξ. καὶ καλόν Plat.): δένδρον πολυκαρπότερον τοῦ συμμέτρου Plat. дерево, чрезмерно отягощенное плодами.