συνίζησις
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 subsidence, collapse, of the earth, ἐς τὰ κοῖλα Id.Mu.396a3 (but γῆ [ἐγένετο] κατὰ συνίζησιν (sc. τοῦ ὕδατος) Sch.Hes.Th.115); οἰκοδομημάτων Plu.Crass.2: metaph., Plot.2.2.1. 2 synizesis, melting of two vowels into one, without alteration of letters, as in πόλεως, μὴ οὐ, etc., EM735.36, Sch.Heph.2.1; but = συγκοπή, EM279.8. 3 compression of air, Hero Spir.Praef.
