| Acronym | Meaning |
 | 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) |
| SS | Swati Language (ISO 639-1 Code) |
| FRO | Faroe Islands (ISO 3166 Trigram) |
| AWSIM | Air Warfare SIMulation |
| RFE | Request For Enhancement |
| NFLD | Newfoundland |
| MARBEF | Marine Biodiversity And Ecosystem Functioning |
| POR | Proposed Operational Requirement |
| CINEOS | Campo Imperatore Near-Earth Objects Survey |
| IE | Interlingue Language (ISO 639-1 Code) |
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