| Acronym | Meaning |
| CCM | Cyclic Cluster Model (in CNDO For Deep Levels In Solids) |
| IPOD | International Phase Of Ocean Drilling |
| HMTC | Hazardous Materials Technical Center |
| QDM | Quantum Defect Method |
| CDIAC | Carbon Dioxide Information Analysis Center |
| FIA | Fluorescence Immunoassay |
| SARM | Selective Androgen Receptor Modulator |
| MIRO | Mineral Industry Research Organization (UK) |
| AIMD | Ab Initio Molecular Dynamics |
| PBG | Photonic Band Gap |