| Acronym | Meaning |
![](file.png) | SMM | Spin Matrix Mapping |
![](file.png) | SMMO | Strictly Monomer Molecular Orbital |
![](file.png) | SMMR | Scanning Multichannel Microwave Radiometer |
![](file.png) | SMO | Sample Management Office (US EPA) |
![](file.png) | SMO | Statistical Model Of Overlap |
![](file.png) | SMOC | Standard Mean Ocean Chloride |
![](file.png) | SMOGSTOP | Statistical Model Of Ground-level Short Term Ozone Pollution |
![](file.png) | SMOKE | Surface Magneto-optic Kerr Effect |
![](file.png) | SMOW | Standard Mean Ocean Water |
![](file.png) | SMP | Soluble Microbial Products |
![](file.png) | SMP | Submitochondrial Particle |
![](file.png) | SMPR | Specific Methane Production Rate |
![](file.png) | SMR | Standardized Mortality Ratios |
![](file.png) | SMRI | Swedish Meat Research Institute |
![](file.png) | SMS | Single Molecule Spectroscopy |
![](file.png) | SMSA | Soft-core Mean Spherical Approxn. |
![](file.png) | SMSI | Strong Metal-support Interaction |
![](file.png) | SMSO | Spinor Molecular Symmetry Orbital |
![](file.png) | SMSX(ALPHA) | Overlapping-sphere Multiple-scattering X(alpha) |
![](file.png) | SMT | Standards |
![](file.png) | SMT | Surface Mount Technology |
![](file.png) | SNAP | Soluble NSF Attachment Protein |
![](file.png) | SNAP | System For Nuclear Auxiliary Power |
![](file.png) | SNAP | Significant New Alternative Policy |
![](file.png) | SNARE | Soluble NSF Attachment Protein Receptor |
![](file.png) | SNARL | Suggested No-adverse Response Level |
![](file.png) | SNCR | Selective Noncatalytic Reduction |
![](file.png) | SNDA | Supplemental New Drug Application |
![](file.png) | SNF | Spent Nuclear Fuel |
![](file.png) | SNFC | Sulfonated Naphthalene-formaldehyde Condensates |
![](file.png) | SNG | Synthetic Natural Gas |
![](file.png) | SNICS | Source Of Negative Ions By Cesium Sputtering |
![](file.png) | SNIF | Site-specific Natural Isotope Fractionation |
![](file.png) | SNIFTIRS | Subtractively Normalized Interfacial Fourier Transform IR Spectroscopy |
![](file.png) | SNL | Sandia National Laboratory |
![](file.png) | SNMS | Secondary Neutral Mass Spectrometry |
![](file.png) | SNMS | Sputtered Neutral Mass Spectrometry |
![](file.png) | SNO | Sudbury Neutrino Observatory |
![](file.png) | SNO | Spin Natural Orbital |
![](file.png) | SNOM | Scanning Near-field Optical Microscopy |
![](file.png) | SNP | Single-nucleotide Polymorphism |
![](file.png) | SNP | Sodium Nitroprusside |
![](file.png) | SNPS | Space Nuclear Power System |
![](file.png) | SNR | Signal-to-noise Ratio |
![](file.png) | SNR | Supernova Remnant |
![](file.png) | SNRNP | Small Nuclear Ribonucleoprotein |
![](file.png) | SNS | Spallation Neutron Source |
![](file.png) | SNS | Separation Network Synthesis (chemical Engineering Design) |
![](file.png) | SNS | Sympathetic Nervous System |
![](file.png) | SNUR | Significant New Use Rule |