Alternative form of xoxo (an abbreviation for hugs and kisses, usually placed at the end of a letter.)

Initialism of extra old; a grade of premium cognac, that has been aged in barrels for more than 6.5 years.

(military, nautical) Initialism of executive officer.

plural of XO

A spicy sauce from Hong Kong, made from roughly chopped dried seafood, chili peppers, onions, and garlic.

The logic function exclusive OR (as opposed to inclusive OR), whose output is true only when exactly one of its inputs is true.

(rare) Or (but not both).

(logic) The connective "exclusive or". / (electrical engineering) A logic gate that implements "exclusive or". / (programming) The symbolic representation that implements "exclusive or".

(transitive, computing) To perform the XOR function upon.

Abbreviation of hugs and kisses, usually placed at the end of a letter.