ἀδελφοποίησις
From LSJ
αἰθὴρ δ᾽ ἐλαφραῖς πτερύγων ῥιπαῖς ὑποσυρίζει (Aeschylus, Prometheus Bound 126) → The bright air fanned | whistles and shrills with rapid beat of wings.
Spanish (DGE)
-εως, ἡ
adopción como hermano fig. de hombres por Cristo, Ath.Al.M.26.280A.