Definitions
from The American Heritage® Dictionary of the English Language, 4th Edition
 n. A logical operator that returns a true value if one, but not both, of its operands is true. Also called exclusive OR.
from Wiktionary, Creative Commons Attribution/ShareAlike License
 n. The connective "exclusive or".
 n. A logic gate that implements "exclusive or".
 n. The symbolic representation that implements "exclusive or".
 v. To perform the XOR function upon.
Etymologies
Examples

Here we go, the first major TV show tonight is CW's "Reaper", released by XOR, which is a little messed up lately. 720p is OUT!

The way I view this is not "XOR" logic, as it could be BOTH.

The multiplexer has three function bits, and so chooses between eight inputs: previous bit of A, sum, AND, OR, XOR, A, B, or next bit of A.
BabbageBoole Digital Arithmetical and Logical Mill: Part 1 « The HalfBaked Maker

Xor: img, img → img: returns the pixelbypixel XOR of two images

Change the OR input to be XOR whenever F2 is reset.
BabbageBoole Digital Arithmetical and Logical Mill: Part 1 « The HalfBaked Maker

By adding another function bit to bitwise negate A as well, we can include all possible (nonidentity) bitwise operations (NOT, AND, OR, NAND, NOR, XOR, XNOR).
BabbageBoole Digital Arithmetical and Logical Mill: Part 1 « The HalfBaked Maker

These multiple time lines generated by the brain are compared to one another with simple logic gates (XOR NOR OR AND NAND, etc.) to determine the best fit for managing and understanding the lower four dimensions.

Is the MediaAccessKey the public key, the fingerprint the private key, and the salt is used to maybe XOR the stream first?

The set {0, 1} of bits (binary digits) under the operation XOR, because each bit is its own inverse: 0 XOR 0 = 1 XOR 1 = 0.

The set {0, 1} of bits (binary digits) under any of the operations AND, OR, XOR.
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