ἐμπλήρωμα
From LSJ
ἤτοι ἐμοὶ τρεῖς μὲν πολὺ φίλταταί εἰσι πόληες Ἄργός τε Σπάρτη τε καὶ εὐρυάγυια Μυκήνη → The three cities I love best are Argos, Sparta, and Mycenae of the broad streets
English (LSJ)
ατος, τό, A space filled up, dub. l. in Gal.18(1).376.
Spanish (DGE)
-ματος, τό complemento, añadido Gal.18(1).376 (dud.).