from The Century Dictionary and Cyclopedia
- n. A name given to a monogram found in the catacombs and in later use appearing in many forms, for example, or , and consisting of the first two letters,
ΧΡ, of the Greek word ΧΡΙΣΤΟ*σ, Χριστός, Christ. Sometimes A (alpha) and Ω(omega) appear in the design. The date of its origin is unknown. The monogram appears with many variations and additions in royal signatures of the ninth and later centuries.
Sorry, no etymologies found.