What does PRAT stand for?

Parliamentary Retiring Allowances Trust - Australia

Platelet Radioactive Antiglobulin Test - Hematology (DAVI)

Prattsburgh Railroad (AD)

Predicted Range Against Target - Military (NVT)

Pressure-Retaining Amphipod Trap - Deep-sea biology

Production Reliability Acceptance Test

Production Reliability Assurance Test (SAUS)