ἐπίρρωσις
From LSJ
ἁρμονίη ἀφανὴς φανερῆς κρείττων → the hidden attunement is better than the obvious one, invisible connection is stronger than visible, harmony we can't see is stronger than harmony we can, unseen harmony is stronger than what we can see
English (LSJ)
εως, ἡ, A strengthening, Ael.NA6.1; ῥώμης Lib.Decl.48.60. II. Rhet., intensification, Longin.11.2.
Greek (Liddell-Scott)
ἐπίρρωσις: -εως, ἡ, ἐνίσχυσις, Αἰλ. π. Ζ. 6. 1, Λογγῖν. 11. 2. - Ἴδε Κόντου Γλωσσ. Παρατηρ. σ. 64.
French (Bailly abrégé)
εως (ἡ) :
action de fortifier, d’affermir, d’encourager.
Étymologie: ἐπιρρώννυμι.