Epiousion (ἐπιούσιον) is a Koine Greek adjective used in the Lord's Prayer verse "Τὸν ἄρτον ἡμῶν τὸν ἐπιούσιον δὸς ἡμῖν σήμερον" ('Give us today our epiousion bread'). Because the word is used nowhere else, its meaning is unclear. It is traditionally translated as "daily", but…