What does PR. stand for?

What does PR. mean?

PR	Percentile Rank Community » Educational
PR	Princeton Review Community » Media
PR	Per Rectum Medical » Oncology
PR	Per Rectum Medical » Physiology
PR	Poste Restante Miscellaneous » USPS
PR	Person Reporting Governmental » Police
PR	Public Representative Community » Law
PR	Pleasant Run Governmental » State & Local
PR	Public Read Computing » General
PR	Previous Residence Community » Housing
PR	Poor Response Community » Educational
PR	Photo Reconnaissance Governmental » Military
PR	Paul Revere Community » Famous
PR	Pakistan Railways Governmental » Transportation
PR	Panta Rei International » Latin
PR	Prayer Request Community » Religion
PR	Pick and Roll Community » Sports
PR	Perfect Resource Computing » Networking
PR	Page Ranking Miscellaneous » Unclassified
PR	Performance Recognition Business » Positions
PR	Pressure Reference Academic & Science » Chemistry
PR	Parameter Ram Miscellaneous » Unclassified
PR	PRobability of .... Academic & Science » Physics
PR	Press and Release Computing » Hardware
PR	Pork Recordings Community » Music