What is a Chi-Rho symbol? Christianity
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What is a Chi-Rho Symbol?

(from Cluny Museum in Paris)

December 2016 - The Chi-Rho symbol is an anagram - a combination - of the first two letters of Christ in Greek, the Chi (our CH) and the Rho (our R). The Chi looks like an X and the Rho looks like a P. In the time of the Roman Empire and in medieval Europe, these two Greek letters written together stood for Christianity, the way the New York Mets' logo has the N and the Y on top of each other. So the Chi-Rho is like a logo for Christianity.

The first time Christians used the chi-rho symbol might have been when the Roman Emperor Constantine was fighting the battle of the Milvian Bridge in 312 AD. But more likely the first time anyone used it was a little later, sometime in the 300s AD.

gold coin with a chi-rho and an alpha and an omega on it
Coin of the Roman Emperor Magnentius (300s AD)

In case you were wondering, the reason some chi-rho's have a Greek letter alpha (A) on one side of the chi-rho and a Greek letter omega (looks like a W) on the other side is that the Bible says that Jesus said "I am the alpha and the omega, the beginning and the end" (because omega was the last letter of the Greek alphabet, the way Z is our last letter in English).

Learn by doing: make an anagram of your own name
More about the alphabet
More about Jesus

Bibliography and further reading about early Christianity:

What is Communion?
What is Lent?
History of the Alphabet
More about Christianity
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Professor Carr

Karen Eva Carr, PhD.
Assoc. Professor Emerita, History
Portland State University

Professor Carr holds a B.A. with high honors from Cornell University in classics and archaeology, and her M.A. and PhD. from the University of Michigan in Classical Art and Archaeology. She has excavated in Scotland, Cyprus, Greece, Israel, and Tunisia, and she has been teaching history to university students for a very long time.

Professor Carr's PSU page

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