The meaning of the Acronym PTR is...

PTR is

• Pay To Read

More Meanings For PTR:

• Cursor image file (OS/2 PTR file)
• Qwk reader pointer file (QMail)
• PoinTeR
• Printer
• Preliminary Technical Review
• Parabolic Trough Receiver
• Pay To Read
• Proton Transfer Reaction
• Protoss Terran Republic
• Peptidyl Transferase Ring
• Patellar Tendon Reflex
• Paid To Read
• platelet transfusion reaction
• Problem Trouble Report
• Progress Through the Ranks

PTR is also in:

• Electronics
• FDA
• File Extensions
• General
• Human Genome
• Libraries
• Military
• Physics
• Physiology
• Positions
• Science Fiction
• Software