| Acronym | Meaning |
| PU | Plutonium |
| LAT | Lowest Astronomical Tide (nautical Charts) |
| R&S | Reconnaissance & Surveillance |
| PE | Ice Pellets (old Style METAR Code) - Peru (ISO 3166 And FIPS 10-4 Country Code Digram) -Physical Education - Premature Ejaculation -Prince Edward Island (postal Code) Price To Earning Ratio (used For Equity Shares) |
| CP | Canadian Pacific - Check Point - Command Post |
| DECA | (U.S.) Defense Commissary Agency |
| NW | Nanowatt |
| ES | Einsteinium - Exasecond |
| AUSCANZUKUS | Australia |
| NAFLD | NonAlcoholic Fatty Liver Disease |