ἔκλαμψις
From LSJ
τὸ ἀγαθὸν αἱρετόν· τὸ δ' αἱρετὸν ἀρεστόν· τὸ δ' ἀρεστὸν ἐπαινετόν· τὸ δ' ἐπαινετὸν καλόν → what is good is chosen, what is chosen is approved, what is approved is admired, what is admired is beautiful
English (LSJ)
εως, ἡ,
A shining forth, brightness, LXX 2 Ma.5.3; ἡλίου Olymp.in Mete.49.9. II metaph., sudden development, at puberty, Hp.Epid.6.114 (ἐκλάμψιας (acc. pl.) ap. Gal. ad loc.).