Ichthys (also Ichthus or Ikhthus /ˈɪkθəs/), from the Koine Greek word for fish: ἰχθύς, (capitalized ΙΧΘΥΣ or ΙΧΘΥϹ) is a symbol consisting of two intersecting arcs, the ends of the right side extending beyond the meeting point so as to resemble the profile of a fish.
ΙΧΘΥΣ (Ichthys) is an acronym for "Ίησοῦς Χριστός, Θεοῦ Υἱός, Σωτήρ", (Iēsous Christos, Theou Yios, Sōtēr), which translates into English as "Jesus Christ, God's Son, Savior".
* Iota (i) is the first letter of Iēsous (Ἰησοῦς), Greek for "Jesus".
* Chi (ch) is the first letter of Christos (Χριστός), Greek for "anointed".
* Theta (th) is the first letter of Theou (Θεου), Greek for "God's", the genitive case of Θεóς, Theos, Greek for "God".
* Ypsilon (y) is the first letter of (h)yios (Υἱός), Greek for "Son".
* Sigma (s) is the first letter of sōtēr (Σωτήρ), Greek for "Savior".