Same or similar entry in other lexica.
The headword (from the verb e)pa/neimi, "I go back") is perhaps quoted from Plato (Republic 532D, Politicus 280B), though there are numerous later possibilities.
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Note also epsilon 1970b (lacking, Adler reports, in mss GITM), the unglossed e)panw/xqh ["he/she/it was opened"]; extant only here.
Evidently quoted from somewhere, this is aorist passive of e)panoi/gw (lacking an iota subscript).