= X =
xor /X'or/, /kzor/ conj.
Exclusive or. `A xor B' means
`A or B, but not both'. "I want to get cherry pie xor a banana
split." This derives from the technical use of the term as a
function on truth-values that is true if exactly one of its two
arguments is true.
--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.