ἰσορρόπησις
From LSJ
οὕτως ἐξ ἐχθρῶν αὐτοκτόνα πέμπετο δῶρα, ἐν χάριτος προφάσει μοῖραν ἔχοντα μόρου → thus mutual gifts that bring death were bestowed by enemies, gifts that brought the lot of death in the name of a favor
English (LSJ)
εως, ἡ,
A equipoise, equilibrium, Hero Spir.1.1.
Greek (Liddell-Scott)
ἰσορρόπησις: -εως, ἡ, = τῷ ἑπομ., Ἥρων ἐν Ἀρχ. Μαθηματ. σελ. 153.