| Acronym | Meaning |
| ANA | Antinuclear Antibodies |
| LCTAO | Linear Combination Of Traveling Atomic Orbitals |
| OCIS | OSHA Computerized Information System |
| TCF | Totally Chlorine-free [in Pulp Industry] |
| PHC | Photonic Crystal |
| SOFAR | Sound Fixing And Ranging |
| ITO | Indium Tin Oxide (gas Sensor |
| RPCR | Restricted Principal Component Regression |
| CNDO/2-U | Universal CNDO/2 (extended To Full Periodic Table) |
| EIC | Electrostatic Interaction Chromatography |