What does PPY stand for?

Pages per Year - Facetious criterion for determining insignificance of Supreme Court Justices - Proposed by University of Chicago professor David P. Currie

Pancreatic Polypeptide - Medicine (DMAA)

Pinch-A-Penny - NCIC boat manufacturer code (NCIC)

Polyacrylonitride Precursor Yam (SAUS)

Property - Telegraphy (PCTE)

Prophesy Development - Vancouver Stock Exchange symbol