X360 stands for Xbox 360
X3C stands for Exact 3-Set Cover
X12 stands for American National Standards Institute Accredited Standards Committee electronic data interchange standard
X2 stands for X-Men 2 (movie)
CANFLEX stands for CANDU Flexible Fuelling (advanced fuel design for CANDU nuclear reactors)
X3F stands for Xbox 360 Fanboy
X11 stands for X Window System Version 11
X2S stands for Cross-To-Save
X3GEN stands for X3generation (gaming, graphics, and anime website)
X10P stands for Xperia 10 Plus (smartphone model)