| Acronym | Meaning |
| PCR | Polymerase Chain Reaction |
| PRY | Paraguay (ISO 3166 Trigram) |
| DTL | Diode-Transistor Logic (electronics) |
| HU | Hungary (ISO 3166 Digram; FIPS 10-4 Country Code) |
| FA | Persian Language (ISO 639-1 Code) |
| IPTS | Institute For Prospective Technological Studies |
| USC | United States Code - University Of South Carolina - University Of Southern California |
| COTS | Commercial Off The Shelf |
| FNA | Functional Needs Analysis |
| ZUL | Zulu Language (ISO 639-2 Code) |