Acronyms, Abbreviations, and Initialisms.
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The meaning of the Acronym XB is...

XB is

  • Experimental Bomber prototype

More Meanings For XB:

  • Xtra Bright
  • eXtra Boxy
  • X Box
  • Experimental Bomber prototype
  • Experimental Bomber prototype

XB is also in:

Acronym Definition Searched: ZK UDL JAN 04637 HOPE 57106 WMMH EIF WRF 02048 TAAA NHP 34282 V LWST