According to the lexicon of E.A. Sophocles, the headword is the plural of dibhth/sion, also written as dibiti/sion or even diaith/sion, a non-Greek (perhaps Persian) word apparently designating a kind of garment. It appears in several Byzantine writers, notably Constantine VII Porphyrogenitus.
The gloss dibi/kia is attested only here and (as an unglossed headword) in ps.-Zonaras.