Noun
English Wikipedia has an article on:chi-rhoWikipedia
chi-rho (plural chi-rhos)
The combination ☧ of the Greek letters chi and rho, used as a Christogram.
Ancient sources draw an unambiguous distinction between the two terms "labarum" and "Chi-Rho", even though later usage sometimes regards the two as synonyms. Source: Internet
He made extensive use of the Chi-Rho and the labarum only later in the conflict with Licinius. Source: Internet
He made more extensive use of the Chi-Rho and the Labarum later, during the conflict with Licinius. Source: Internet
The accounts of the two contemporary authors, though not entirely consistent, have been merged into a popular notion of Constantine seeing the Chi-Rho sign on the evening before the battle. Source: Internet
Those two accounts can hardly be reconciled with each other, though they have been merged in popular notion into Constantine seeing the Chi-Rho sign on the evening before the battle. Source: Internet