Genitive singular of the adjective εἰδήμων , evidently quoted from somewhere; cf. Hesychius, epsilon747 with the gloss γνωστικός (and the adverbial form at epsilon762, with the gloss ἐπιστημόνως ); and epsilon 2613. As a gloss, the adjective occurs in Hesychius, delta36 and delta465.
cf. generally epsiloniota 30.