"Eucharistia" is Greek for "thanksgiving" or "eucharist." Christ began, as the celebrant begins according to 1 Corinthians 11.24, by giving thanks. The Apostle Paul writes, "and when he (Jesus) had given thanks, he broke it and said, 'This is my body, which is for you; do this in remembrance of me.' In the same way, after supper he took the cup, saying, 'This cup is the new covenant in my blood; do this, whenever you drink it, in remembrance of me.'" Justin Martyr (100-160 AD) in about 155 AD describes the thanksgiving Eucharist, which was the crown of the Sunday worship, after the service of Scripture reading, preaching, and prayers.
John Foster describes this in "The First Advance - Church History 1: AD 29-500," "Bread is brought to the President and wine mixed with water. He says a prayer of thanksgiving, as well as he is able, and the congregation say "Amen," which is Hebrew for 'May it be so.'" "The deacons give the bread and wine to all present, and take it to those absent. Those who are well off, and who want to do so, give to the collection. This is placed with the President, and he takes care of orphans, widows, and those ill or otherwise in need, those in prison, and strangers who are staying here. In fact, he becomes the helper of all who are in need." We note with interest today that all the gifts in total are given away!