| Abbreviation | Definition |
|---|---|
| SIDBP | Smad Interacting DNA Binding Protein |
| SIDD | Stress Induced Dna Duplex |
| SIF | Stumpy Induction Factor |
| SIM | Society for Industrial Microbiology |
| SIMS | Societal Institute of the Mathematical Sciences |
| SIR | Silent Information Regulator |
| SIRNA | small interfering RNA |
| SIT | Suppressor of Initiation of Transcription |
| SIVB | Society for In Vitro Biology |
| SLAM | Signalling Lymphocyte Activation Molecule |
| SLIRP | SRA Stem-Loop Interacting RNA Binding Protein |
| SMART | Somatic Mutation And Recombination Tests |
| SMAT | Small molecule anti-genomic therapeutics |
| SMC | Structural Maintenance of Chromosomes |
| SME | Somatic Mutational Event |
| SMGI | Subcommittee of the Materials Genome Initiative |
| SNAP | Soluble Nsf Attachment Protein |
| SNI1 | Suppressor of NPR1-1, Inducible 1 |
| SNL | Sandia National Laboratory |
| SNP | Single Nucleotide Polymorphisms |