| Acronym | Meaning |
| IXS | International XAFS Society |
| MICROSS | Micro-computer Based River Oil Spill Simulation |
| IRC | Intrinsic Reaction Coordinate |
| IMC | Intermetallic Matrix Composite |
| IAP | Indoor Air Pollution |
| NEAR | Near Earth Asteroid Rendezvous |
| CTA | Cellulose Triacetate (Reg: 9012093) |
| CGIAR | Consultative Group On International Agricultural Research |
| GSK | Glycogen Synthase Kinase |
| CNOC | Commission On Nomenclature Of Organic Chemistry |