X-PPAC

X-PPAC stands for Extraterrestrial Phenomena Political Action Committee

• Wishes

X-E

X-E stands for X-Entertainment (website)

• Wishes

X-BOX

X-BOX stands for Microsoft console game system

• Wishes

X-KRSS

X-KRSS stands for XML Key Registration Service Specification (W3C)

X(T)1

X(T)1 stands for Intermittent Exotropia at Near (walleye; ophthalmology)

• Poems

X-COM

X-COM stands for Extraterrestrial Combat Unit (game)

X(T)

X(T) stands for Intermittent Exotropia at Distance (walleye; ophthalmology)

• Names

X(ALPHA)-RV

X(ALPHA)-RV stands for X(Alpha) Scattered-Wave Method

• Questions

X-CRV

X-CRV stands for Experimental-Crew Return Vehicle (X-38 International Space Station Lifeboat; aka CRV, XCRV, X-38)

X-ALD

X-ALD stands for X-Linked Adrenoleukodystrophy (disease)