Xtianity

Origin

1634,

OED

from Christianity, replacing Christ with the abbreviation Xt (from Ancient Greek Χ (the letter chi.), the first letter of Χριστός ("Christ") + t, the last letter of "Christ"). Compare the more common Xmas.

Full definition of Xtianity

Noun

1. Alternative form of Xianity
• 1950, December 14, C. S. Lewis, Letter to Sheldon Vanauken, I believe Buddhism to be a simplification of Hinduism and Islam to be a simplification of Xtianity.

Usage notes

See also: Xianity#Usage notes

As with Xmas and Xianity, as of the late 20th century this term may be considered informal and potentially disrespectful, though it was traditionally an unobjectionable scribal abbreviation.