> Epiousios (ἐπιούσιος) is a Greek adjective of controversial meaning whose only recorded appearance is in the Lord's Prayer. Although it is traditionally translated as "daily" in the phrase τὸν ἄρτον ἡμῶν τὸν ἐπιούσιον ("our epiousios bread"), most modern scholars reject that interpretation.
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> The modern Catholic Catechism holds that there are several ways of understanding epiousios, including the traditional 'daily', but most literally as 'supersubstantial' or 'superessential', based on its morphological components.[14] […]