XOXO may refer to any of the following:

  1. Short for eXtensible Open XHTML Outlines, XOXO is a format for processing by XML engines, where the outline is a hierarchical, ordered list of elements.

  2. Short for “hugs and kisses,” XOXO is a way of letting someone know you care. Both the X and the O can be thought of as a hug and kiss.

  • The official XOXO specification.

Chat terms, Computer acronyms, Programming terms, XHTML