What does XI stand for?

What does XI mean?

XI	eXchange Infrastructure (SAP) Computing » Software
XI	eXternal Interface Computing » Hardware
XI	eXternal Interface Computing » Software
XI	XML Import Computing » Software
XI	X-ray Instrumentation Governmental » NASA
XI	X-ray Instrumentation Medical » Laboratory
XI	Roman Numeral 11 Academic & Science » Mathematics
XI	Extreme Illumination Business » Firms
XI	X Identification (frame) Computing » Telecom
XI	eXcellence for Intel Business » General
XI	Fastracker Instrument file Computing » File Extensions
XI	Xtreme Integrity Computing » Security
XI	Xenobiological Initiative Miscellaneous » Science Fiction
XI	Xpert Intelligence Computing » Software
Xi	Inductive Reactance Academic & Science » Electronics