modulo

1. Mathematics. With respect to a specified modulus: 18 is congruent to 42 modulo 12 because both 18 and 42 leave 6 as a remainder when divided by 12.
2. Correcting or adjusting for something, as by leaving something out of account: This proposal is the best so far, modulo the fact that parts of it need modification.

[Latin modulō, ablative of modulus. See mode.]

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.”

To the modulus. In mathematics, two numbers are said to be congruent modulo n when they differ by some multiple of n. For instance, 40 is congruent to each of 24 and 32 modulo 8. In Quine's Word and Object the modulus of a stimulus is its duration, and two stimuli may be equivalent modulo one duration, but not modulo another. Other uses of the term have been temporarily fashionable in philosophy, and have to be picked up, if possible, from the context.