This name derives from the Ancient Greek “Athanásios (Αθανάσιος) āthanasíā (ᾱ̓θᾰνᾰσῐ́ᾱ),” composed of two elements: “a- (α-)” (absence of, privative prefix) plus “thánatos (θάνατος) thnḗiskō (θνῄσκω)” (to die, death, corpse). In turn, the name means “immortal, resurrection.” The name Thanassis or Athanasios, in its full form, is known since the antiquity, although it was not that much in use by ancient Greeks. For the Greek Orthodox Church, the name is associated with Athanasios of Alexandreia, also known as Saint Athanasius or Athanasios the Great. He was episcope and Patriarch of Alexandria in Egypt, and he is considered one of the four Fathers of the Eastern Orthodox Church. Athanasios was mostly known due to his strong opposition against Arians during the Byzantine Era.
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