ἄρθρωμα
From LSJ
θεωρεῖται δὲ ἀνοησίᾳ κρείττονι νοήσεως → it is grasped only by means of an ignorance superior to intellection, it may be immediately cognised only by means of a non-intellection superior to intellection
Spanish (DGE)
-ματος, τό articulación ref. a la voz, Phld.Cont.fr.60.