| Acronym | Meaning |
| ICAC | Institute Of Clean Air Companies |
| DEM | Distinguishable Electron Method |
| LH | Luteinizing Hormone |
| (PI)SDCI | (pi)-electron Singly And Doubly Excited CI |
| AIPLA | American Intellectual Property Law Assocn. |
| ESMS | Electrospray Ionization Mass Spectrometry |
| ASTIS | Arctic Science And Technology Information System |
| POEMS | Plasma Optical Emission Mass Spectrometer |
| SCF | Spherical Convergent Flap |
| GRNN | Generalized Regression Neural Network |