Pan-American Independent Line - Common carrier symbol
Parallel Access Multiple Distribution (PDAA)
Periodic Acid Mixed Diamine (OA)
Prelingually Acquired Meningitic Deafness - Medicine (MELL)
Price and Management Data
Primary Adrenocortical Micronodular Dysplasia - Medicine (DMAA)
Process Automation Monitor/Disk Version - Texas Instruments, Inc.
Public Access Machine Readable Documents (NITA)