| Acronym | Meaning |
| LDD | Lightly Doped Drain |
| FLMS | Femtosecond Laser Mass Spectrometry |
| IVR | Intramolecular Vibrational Energy Redistribution |
| MCH | Mean Cell Hemoglobin |
| HADD | Highest Average Daily Dose |
| IINS | Incoherent Inelastic Neutron Scattering |
| D5W | Dextrose 5% In Water |
| MCEP | Multiconfigurational Electron Propagator (in Ionization Potential Calcns.) |
| GCS | Geo-Common Subsystem (subsystem Of AIRS) |
| ADWIOS | Adiabatic Distorted Wave Infinite Order Sudden |