X

Acronym	Definition
X	10 (Roman numeral)
X	Extra
X	Unknown Quantity (variable)
X	Experimental (US Military aircraft designation, as in X-1)
X	Telephone Extension
X	X Windows (TCP/IP-based network-oriented window system)
X	Multiplied by
X	MPAA Movie Rating for Adults Only
X	Special Equipment (Stores 100 code)
X	Generation X
X	X-ray (aviation letter code)
X	Cross
X	Ex (former)
X	Strike
X	Exchange
X	Kiss
X	Corporation (IRB)
X	Existing
X	Exercise
X	Except (medical orders)
X	Transfer (prefix)
X	Christ
X	Extreme (games)
X	Strike (bowling)
X	Malcolm X
X	Axis (ophthalmological-related)
X	Ecstasy
X	Halogen (organic chemistry)
X	Northwest Territories (postal code designation, Canada)
X	Brigade (Graphical Representation/Army)
X	X Chromosome (genetics)
X	Xenophobia
X	École Polytechnique (French famous university)
X	Xerox Corporation
X	Reactance
X	X Gene (X-Men)
X	Offensive team (sports/coaching)
X	Behind the Goal (Lacrosse)
X	Special Distribution (Air Force)
X	Personal Mark (or signature)
X	50 Proof (Alcoholic Beverages)
X	Female Chromosome
X	Perpendicular to Orbit Plane
X	Initial Position Error (of casualty)
X	8-12 GHz frequency band
X	Exophoria At Distance (ophthalmology)
X	Horizontal axis in Cartesian coordinate system
X	[not an acronym] Last name taken by some Nation of Islam members

“X”缩略