PIU

Performance and Innovation Unit (now the Strategy Unit).
Found on http://www.dti.gov.uk/energy/energy-glossary/page24579.html

Piu

• (adv.) A little more; as, piu allegro, a little more briskly.
Found on http://thinkexist.com/dictionary/meaning/piu/

PIU

Partnership Intelligence Unit
Found on http://www.cjp.org.uk/glossary/

Piu

More.
Found on http://www.violinonline.com/glossary.htm

piu

more
Found on http://www.whitstablechoral.org.uk/membership/glossary-of-musical-terms/

PIU

Project Implementation Unit.
Found on http://www.ifad.org/lrkm/glossary.htm
No exact match found