| Acronym | Meaning |
![](file.png) | ISS | Ion Scattering Spectroscopy |
![](file.png) | ISSC | International Subcommission On Stratigraphic Classification |
![](file.png) | ISSI | International Society For Scientometrics And Informetrics |
![](file.png) | ISSJ | International Scientific Station Of The Jungfraujoch (atm. Observatory |
![](file.png) | ISSN | International Standard Serial Number |
![](file.png) | ISST | International Subcommission On Stratigraphic Terminology |
![](file.png) | IST | Internal Standardization Technique |
![](file.png) | ISTEA | Intermodal Surface Transportation Efficiency Act |
![](file.png) | ISTH | International Society On Thrombosis And Hemostasis |
![](file.png) | ISTO | Industry Standards And Technology Organization |
![](file.png) | ISTP | Index To Scientific And Technical Proceedings |
![](file.png) | ISTP | International Solar Terrestrial Physics |
![](file.png) | ISTS | Impulsive Stimulated Thermal Scattering [a Laser-based Ultrasonic Technique] |
![](file.png) | ISV | In Situ Vitrification |
![](file.png) | ISV | Initial Settling Velocity |
![](file.png) | ISVM | Iterative Schwinger Variational Method |
![](file.png) | ISVS | In Situ Vapor Stripping |
![](file.png) | ISWMP | Integrated Solid Waste Management Plan |
![](file.png) | ISX | Impurity Study Expt. |
![](file.png) | ISX | Insoluble Starch Xanthate (ion Exchanger For Wastewater Treatment) |
![](file.png) | IT | Integral Transform |
![](file.png) | ITAM | Immunoreceptor Tyrosine-based Activation Motif |
![](file.png) | ITC | Interagency Testing Committee (TSCA) |
![](file.png) | ITC | International Translation Center |
![](file.png) | ITC | Ionic Thermal Currents |
![](file.png) | ITC | Isothermal Titration Calorimetry |
![](file.png) | ITCZ | Intertropical Convergence Zone (of Seawater) |
![](file.png) | ITD | Ion Trap Detector (mass Spectrometry) |
![](file.png) | ITDHO | Improved Time-dependent Harmonic Oscillator |
![](file.png) | ITEP | Institute For Theoretical And Experimental Physics |
![](file.png) | ITER | International Thermonuclear Experimental Reactor |
![](file.png) | ITER | International Toxicity Estimates For Risk |
![](file.png) | ITFA | Iterative Target Factor Analysis |
![](file.png) | ITFM | Intergovernmental Task Force On Monitoring |
![](file.png) | ITFW | Improved Thomas-Fermi-Weizaecker (model) |
![](file.png) | ITG | Ion Temperature Gradient |
![](file.png) | ITIES | Interface Between Two Immiscible Electrolyte Solutions |
![](file.png) | ITMS | Ion Trap Mass Spectrometer |
![](file.png) | ITO | Indium Tin Oxide (gas Sensor |
![](file.png) | ITP | Inosine 5'-triphosphate |
![](file.png) | ITPOT | Improved Two-parameter Omega Technique |
![](file.png) | ITRC | Interstate Technology And Regulatory Cooperation Working Group |
![](file.png) | ITRI | Inhalation Toxicology Research Institute |
![](file.png) | ITRM | Inverse Thermoremanent Magnetization |
![](file.png) | ITRS | International Technology Roadmap For Semiconductors |
![](file.png) | ITS | Inelastic Tunnelling Spectroscopy |
![](file.png) | ITS | Internal Transcribed Spacer |
![](file.png) | ITT | Impact Transition Temperature |
![](file.png) | ITTFA | Iterative Target Transformation Factor Analysis |
![](file.png) | IU | International Unit |