| AAPM | American Association of Physicists in Medicine |
| AC | alternating current |
| AFM | atomic force microscope |
| Al | aluminum |
| AMO | atomic, molecular, and optical |
| APD | Applied Physics Division |
| ASD | Atomic Spectra Database |
| BEOL | back-end-of-line |
| BIPM | Bureau International des Poids et Mesures |
| BMF | Boulder Microfabrication Facility |
| cavity QED | cavity quantum electrodynamics |
| CIPM | International Committee for Weights and Measures |
| CIRMS | Council of Ionizing Radiation Measurements and Standards |
| CMOS | complementary metal-oxide-semiconductor |
| C-NOT | controlled-NOT |
| CODATA | Committee on Data for Science and Technology |
| CT | computed tomography |
| DARPA | Defense Advanced Research Projects Agency |
| DC | direct current |
| DHS | Department of Homeland Security |
| DOC | Department of Commerce |
| DoD | Department of Defense |
| DOE | Department of Energy |
| DWSS | DoD-focused DoD-wide strategic sourcing |
| EBIT | electron beam ion trap |
| EDM | electric dipole moment of the electron |
| EPD | Engineering Physics Division |
| EPRI | Electric Power Research Institute |
| FDA | Food and Drug Administration |
| FTS | Fourier transform spectrometer |
| GaN | gallium nitride |
| HFIR | high flux isotope reactor |
| Hg | mercury |
| HgCdTe | mercury cadmium telluride |
| HIA | highly ionized atom |
| HPS | Health Physics Society |
| HSI | hyperspectral imaging |
| IEEE | Institute of Electrical and Electronics Engineers |
| ILMP | International Legal Metrology Program |
| IR | infrared |
| ISO | International Organization for Standardization |
| ISS | International Space Station |
| ITL | Information Technology Laboratory |
| IUPAP | International Union of Pure and Applied Physics |
| JHU | Johns Hopkins University |
| JILA | joint institute between NIST and the University of Colorado, Boulder |
| JQI | Joint Quantum Institute |
| KRb | ultracold potassium-rubidium |
| LBIR | low-background infrared |
| LIDAR | light detection and ranging |
| LMDP | Legal Metrology Devices Program |
| low-SWaP | low size, weight, and power |
| mAb | monoclonal antibody |
| MBE | molecular beam epitaxy |
| MDA | Missile Defense Agency |
| MEMS | microelectromechanical system |
| MRI | magnetic resonance imaging |
| NCNR | NIST Center for Neutron Research |
| NCSLI | National Conference of Standards Laboratories International |
| NCWM | National Conference on Weights and Measures |
| NGA | National Geospatial-Intelligence Agency |
| NIH | National Institutes of Health |
| NIST | National Institute of Standards and Technology |
| NMI | national metrology institute |
| NML | national measurement laboratory |
| NMR | nuclear magnetic resonance |
| NOAA | National Oceanic and Atmospheric Administration |
| NPOESS | National Polar-Orbiting Operational Environmental Satellite System |
| NRC | National Research Council |
| OCT | optical coherence tomography |
| OIML | International Organization of Legal Metrology |
| OWM | Office of Weights and Measures |
| PACE | preaerosol, clouds, and ocean ecosystem |
| PET | positron emission tomograph(y) |
| PIF | precision imaging facility |
| PML | Physical Measurement Laboratory |
| PMU | phasor measurement unit |
| PTB | Physikalisch-Technische Bundesanstalt |
| QED | Quantum Electromagnetics Division |
| QI | quantum information |
| QMD | Quantum Measurement Division |
| QMS | quality management system |
| QPD | Quantum Physics Division |
| QuICS | Quantum Information and Computer Science |
| R&D | research and development |
| RF | radio frequency |
| RPD | Radiation Physics Division |
| RSNA | Radiological Society of North America |
| SANS | small-angle neutron scattering |
| SEMI | Semiconductor Equipment and Materials International |
| SGIP | Smart Grid Interoperability Panel |
| SI | international system of units |
| SIM | Sistema Interamericano de MetrologĂa |
| SIRCUS | spectral irradiance and radiance responsivity calibrations using uniform sources |
| SNMMI | Society of Nuclear Medicine and Molecular Imaging |
| SQUID | superconducting quantum interference device |
| SS | solid state |
| SSD | Sensor Science Division |
| SURF III | Synchrotron Ultraviolet Radiation Facility |
| TDCR | triple-to-double coincidence ratio |
| TES | transition edge sensor |
| TFD | Time and Frequency Division |
| UTC | coordinated universal time |
| UV | ultraviolet |
| VIIRS | visible infrared imaging radiometer suite |
| VUV | vacuum ultraviolet |
| Yb | ytterbium |
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