Psi (Cyrillic)

Psi (Ѱ, ѱ) is a letter in the Cyrillic alphabet. It is used in Church Slavonic. It is based on the Greek letter Psi (letter). It was used to write Greek words.Simovyč, V. and J.B. Rudnycky, “The History of Ukrainian Orthography”, in Kubijovyč, Volodymyr ed. (1963), Ukraine: A Concise Encyclopædia, v 1.   It is used to represent the cluster PS in the ultra-old ancient 1000 BC-introduced otherwritingsystem language Greek.

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