D defs.my
Entry 1 sense Webster, 1913

XP

· IPA
01 The first two letters of the Greek word CRISTOS, Christ; -- an abbreviation used with the letters separate or, oftener, in a monogram, ofte…
  1. 1.
    The first two letters of the Greek word CRISTOS, Christ; -- an abbreviation used with the letters separate or, oftener, in a monogram, often inclosed in a circle, as a symbol or emblem of Christ. It use as an emblem was introduced by Constantine the Great, whence it is known as the Constantinian symbol, [or] monogram. See Labarum. See: Labarum