1. 
   UXO
   Unexploded Explosive Ordnance Explosive ordnance which has been primed, fuzed, armed or otherwise prepared for action, and which has been dropped, fired, launched, projected, or placed in such a manner as to constitute a hazard to operations, installations, personnel or material and remains unexplod...
   Found op http://www.encyclo.co.uk/visitor-contributions.php
   
   
2. 
   UXO
   See unexploded explosive ordnance.
   Found op http://www.aboutmilitaryschools.org/military/glossary/u.html
   
   
3. 
   UXO
   Unexploded Ordnance
   Found op http://en.wikipedia.org/wiki/List_of_U.S._government_and_military_acronyms
   
   

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