The Jargon File (version 4.4.7, 29 Dec 2003):

modulo
 /mod'yu?loh/, prep.

    Except for. An overgeneralization of mathematical terminology; one can
    consider saying that 4 equals 22 except for the 9s (4 = 22 mod 9). ?Well,
    LISP seems to work okay now, modulo that GC bug.? ?I feel fine today
    modulo a slight headache.?


The Free On-line Dictionary of Computing (30 December 2018):

modulo

   /mod'yu-loh/

   1.  modular arithmetic.

   2.  modulo operator.

   (1999-07-12)