| Acronym | Meaning |
![](file.png) | IECA | International Erosion Control Association |
![](file.png) | IECSC | Inventory Of Existing Chemical Substance In China |
![](file.png) | IECT | Impulsive Ergodic Collision Theory |
![](file.png) | IEDM | International Electron Devices Meeting |
![](file.png) | IEE | Institution Of Electrical Engineers |
![](file.png) | IEEE | Institute Of Electrical And Electronics Engineers |
![](file.png) | IEEM | Ion-electron Emission Microscopy |
![](file.png) | IEET | Intramolecular Electronic Energy Transfer |
![](file.png) | IEF | Isoelectric Focusing |
![](file.png) | IEG | Immediate Early Gene |
![](file.png) | IEH | Intermediate Effective Hamiltonian |
![](file.png) | IEHMO | Iterative Extended Hueckel Molecular Orbital |
![](file.png) | IEHT | Iterative Extended Hueckel Theory |
![](file.png) | IEL | Independent Electron (model In Ion-impact Ionization Calcns.) |
![](file.png) | IEL | Intraepithelial Lymphocyte |
![](file.png) | IEM | Immunoelectron Microscopy |
![](file.png) | IEM | Independent Electron Model (for Ionization In Ion-atom Collisions) |
![](file.png) | IEM | Interstitial Electron Model |
![](file.png) | IEMA | Immunoenzymometric Assay |
![](file.png) | IEMM | Incident Energy Modulation Method |
![](file.png) | IEMP | Integrated Environmental Management Project |
![](file.png) | IEP | Isoelectric Point |
![](file.png) | IEPA | Illinois Environmental Protection Agency |
![](file.png) | IEPA | Independent Electron Pair Approximation |
![](file.png) | IEQ | Indoor Environmental Quality |
![](file.png) | IER | Ion Exchange Resin |
![](file.png) | IERM | Intermediate Energy R-matrix (theory In Scattering Calcns.) |
![](file.png) | IES | Institute Of Environmental Sciences |
![](file.png) | IES | Internal Eliminated Sequence |
![](file.png) | IESS | Inelastic Electron Scattering Spectroscopy |
![](file.png) | IESWTR | Interim Enhanced Surface Water Treatment Rule |
![](file.png) | IETS | Inelastic Electron Tunneling Spectroscopy |
![](file.png) | IEV | Independent Event (model In Ion-atom Collisions) |
![](file.png) | IEV | Ion-exchange Voltammetry |
![](file.png) | IF | Interstitial Free |
![](file.png) | IF DRM | Inversion-free Direct Recursion Method (for Surface Electronic Structure) |
![](file.png) | IFA | Immunofluorescence Assay |
![](file.png) | IFANT | International Foundation For The Advancement Of Nondestructive Testing |
![](file.png) | IFAS | Integrated Fixed-film Activated Sludge |
![](file.png) | IFCC | International Federation Of Clin. Chem. |
![](file.png) | IFD | Industrial Facilities Discharge File (file Within STORET) |
![](file.png) | IFFD | Intermittently Fed Fill And Draw System |
![](file.png) | IFFE | Immune Free Flow Electrophoresis |
![](file.png) | IFM | Immunofluorescence Microscopy |
![](file.png) | IFM | Interfacial Force Microscopy |
![](file.png) | IFMA | Immunofluorometric Assay |
![](file.png) | IFOT | Invariant Fock Operator Technique |
![](file.png) | IFPC | Integrated Flight And Propulsion Control |
![](file.png) | IFPM | Independent Fermi Particle Model (in Atom-ion Impact Ionization) |
![](file.png) | IFPMA | International Federation Of Pharmaceutical Manufacturers Associations |