τὸ ὅλον τόδε ποσαπλάσιον τοῦδε γίγνεται → how many times greater is this whole sum than that one
v. intrans.
P. and V. συνέρχεσθαι, ἁθροίζεσθαι, συναθροίζεσθαι, συλλέγεσθαι, Ar. and P. συνίστασθαι.
