noun Definition of xp in Technology (operating system) The version of the Microsoft Windows operating system that, when it was released on 2001-10-25, finally merged the Windows 95 - Windows ME strain with the Windows NT - Windows 2000 one. XP comes in two main versions: Windows XP Professional Edition and a simplified subset for home users, Windows XP Home Edition. 1
abbreviation XP (grammar, X-bar theory) "X Phrase": a phrase which consists of either: (1) an optional specifier and an X-bar phrase, or (2) a conjunction sandwiched between two other XPs. The X is a "pro-letter" which can be substituted by letters such as N for noun, V for verb, P for preposition, I for inflectional, etc. 0
noun xp the Christian monogram made up of the Greek letters khi and rho, the first two letters of Khristos, the Greek form of Christ's name 0
