Definition of "xor"

xor

/ɛksˈo(ɹ)/

noun
plural xors
1. The logic function exclusive OR (as opposed to inclusive OR), whose output is true only when exactly one of its inputs is true.
conjunction
1. (rare) Or (but not both).
  Quotations
  The argument leads to the conclusion that an omnipotent being could rationally be able to do one xor the other and still be omnipotent.
  2002, Rob Janssen, “The rock argument”, in alt.atheism (Usenet)