| Acronym | Meaning |
 | NI | Nickel |
| NOAO | National Optical Astronomy Observatory |
| SJ | Svalbard And Jan Mayen (ISO 3166 Digram) -Societas Iesu (Latin: The Society Of Jesus |
| TLAR | That Looks About Right (chat Shorthand) - Transporter-Launcher And Radar |
| FM | Fermium |
| IDA | U.S. Institute For Defense Analyses - International Development Association (part Of The World Bank |
| SCCS | Standard Cubic Centimetre Per Second (unit Of Measurement Of Fluid Flow) |
| TO | Togo (FIPS 10-4 Country Code) - Tonga (ISO 3166 Digram) |
| NUCC(C) | Nordic University Computer Club (Conference) |
| YU | York University -former Yugoslavia (ISO 3166 Digram |
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