ἐκμελαίνομαι
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)
A to be darkened, grow dark, Heraclit.All.39; ὑπὸ [νυκτός] ib.45.
Greek (Liddell-Scott)
ἐκμελαίνομαι: παθ., γίνομαι κατάμαυρος, Κλήμ. Ἀλ. 45.
Spanish (DGE)
oscurecerse las nubes en invierno, Heraclit.All.39, τόπος ὑπὸ ταύτης (νυκτός) Heraclit.All.45
•ennegrecerse (καπνός) ᾧ ... τυφόμενοι ἐκμελαίνονται de ídolos, Clem.Al.Protr.4.51.