XB = Xarb
a Pakistani rock band
XC - xenophobic
XD = xiphoid
XE - xylene
XF = xerif
alternate spelling of sheriff (in Webster’s Unabridged, 2nd edition)
XG = xenolog
- (genetics) A type of ortholog where the homologous sequences are found in different species because of horizontal gene transfer.
XH = xylograph
a wood engraving
XI: xystoi
XJ = xoj
a file extension
XK = Xenobook, a gaming laptop made by Rover.
XL - Xmal
XM - Xylem
XN - xenon
XO = Xero
a New Zealand-based software company
XP = Xanthip Gold, a Thailand-based distributor of herbal supplements.
XQ = Xeriq Creative Solutions, apparently defunct
XR - xyster
XS = xylous
woody
XT - Ximaol
An obsolete drug: Octamoxin - Wikipedia
XU - Xanadu