εκτενή
From LSJ
ἐν πίθῳ τὴν κεραμείαν μανθάνειν → in breaking many pots, the potter learns his craft | of those who undertake the most difficult tasks without learning the elements of the art | don't run before you can walk
Greek Monolingual
ἐκτενή, η (Μ)
εκκλ. οι έξι δεήσεις («Εἴπωμεν πάντες... Ἐλέησον ἡμᾶς ὁ Θεός... Ἔτι δεόμεθα... κ.λπ.» και οι έξι «αιτήσεις» «Τὴν ἡμέραν πᾶσαν τελείαν, ἁγίαν... κ.λπ.»).