An artos (Greek: Ἄρτος, "leavened loaf", "bread") is a loaf of leavened bread that is blessed during services in the Eastern Orthodox and Byzantine rite catholic churches. A large Artos is baked with a seal depicting the resurrection for use at Pascha (Easter). Smaller loaves are blessed during great vespers in a ritual called Artoklasia and in other occasions like feast days, weddings, memorial services etc.
Artos in Ancient Greek meant "cake", "loaf of wheat-bread", collectively "bread", but in Modern Greek it is now more commonly used in the context of communion bread used in church, having been replaced in the broader context by the word ψωμί, psomi.[n 1] This word is thought to be first attested in Mycenaean Greek as the first stem of the compound word 𐀀𐀵𐀡𐀦, a-to-po-qo, "bakers", written in the Linear b syllabary.[n 2][n 3]