λαβδακισμός
From LSJ
Περὶ τοῦ ἐπέκεινα τοῦ νοῦ κατὰ μὲν νόησιν πολλὰ λέγεται, θεωρεῖται δὲ ἀνοησίᾳ κρείττονι νοήσεως → On the subject of that which is beyond intellect, many statements are made on the basis of intellection, but it may be immediately cognised only by means of a non-intellection superior to intellection
English (LSJ)
ὁ, (λάβδα) a defect in pronunciation, Quint.Inst.1.5.32 (pl.), Diom.453 K.
German (Pape)
[Seite 1] ὁ, = λαμβδακισμός?