xerostomia
         n 1: abnormal dryness of the mouth resulting from decreased
               secretion of saliva [syn: {xerostomia}, {dry mouth}]

English Dictionary: xerostomia	by the DICT Development Group
From WordNet (r) 3.0 (2006) [wn]:
XOR gate n gate for exclusive OR; a circuit in a computer that fires only if only one of its inputs fire Synonym(s): X-OR circuit, XOR circuit, XOR gate
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]:
Xerox Data Systems Model 940          (SDS 940, XDS 940) A {time-sharing} system,       announced in February 1966, developed by {Scientific Data       Systems} with help from The {University of California at       Berkeley} and {Tymshare}.   SDS 940 was {backward compatible}       with SDS's previous systems (except the 12-bit {SDS 92}).   It       had {monitor} and user modes, dynamic program relocation,       automatic memory fragmentation, and system protection.          After 1968 {Xerox} bought out SDS and renamed the SDS machines       "Xerox Data Systems" (XDS) but never actually built any.          (2002-09-08)
From The Free On-line Dictionary of Computing (15Feb98) [foldoc]:
Xerox Star          {Xerox 8010}