| Acronym | Meaning |
| MIS 5 | Marine Isotope Substage 5e |
| MPPCF | Millions Of Particles Per Cubic Foot |
| IAB | Information Access Branch |
| DLCA | Diffusion Limited Cluster Aggregation |
| SEDEX | Sedimentary Exhalative |
| SCPT | Self-consistent-perturbation Theory |
| NGPSA | Natural Gas Pipeline Safety Act |
| ADHD | Attention Deficit Hyperactivity Disorder |
| MLK | Mixed-lineage Kinase |
| DOVAM-S | Detection Of Virtually All Mutations-SSCP |