πρόσδεσις
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 tying on or to, Gloss. II attachment of a limb, Heliod. ap. Orib.49.25.10.
German (Pape)
[Seite 755] ἡ, das Anbinden (?).