epiousios

“Daily is a misleading translation of the Greek epiousios, which is literally "above the essence," or "supersubstantial.”

This Side of Glory

“Father concerns the inter pretation of the words artos epiousios which in accordance with the Vulgate in St. Luke we translate "our daily bread", St. Jerome, by a strange inconsistency, changed the pre-existing word quotidianum into supersubstantialem in St. Matthew but left quotidianum in St. Luke.”

The Catholic Encyclopedia, Volume 9: Laprade-Mass Liturgy

“This bread is the first-fruits [2430] of the future bread which is epiousios, i.e. necessary for existence.”

NPNF2-09. Hilary of Poitiers, John of Damascus

“This is the meaning of the word [Greek: epiousios].] [Footnote 3: Luke xii.”

The Life of Jesus

“Jerome: The Greek word here which we render, ` supersubstantialis, 'is epiousios.”

Catena Aurea - Gospel of Matthew

“(battologein biastes, eunouchizein etc.) were introduced for the first time by Matthew, or at least he was the first writer in whom they were discovered; 8 words (aphedon, gamizein, etc.) were employed for the first time by Matthew and Mark, and 15 others (ekchunesthai, epiousios, etc.) by Matthew and another New Testament writer.”

The Catholic Encyclopedia, Volume 10: Mass Music-Newman

“For epiousios he heads for the Old Syriac, Lahmmo ameno diyomo hab lan, which he translates ‘Give us to-day the bread that doesn’t run out’ p.121.”

Our Daily Neologism

“The expression here used of day by day is the very same with our daily bread; and therefore some think that we must look for another signification of the word epiousios than that of daily, which we give it, and that it means our necessary bread, that bread that is suited to the craving of our nature, the fruit that is brought out of the earth for our bodies that are made of the earth and are earthly, Ps. civ.”

Commentary on the Whole Bible Volume V (Matthew to John)