| Acronym | Meaning |
| PERL | Passivated Emitter And Rear Locally Diffused (solar Cells) |
| LOF | Lack Of Fit |
| LTO | Laguerre-type Orbital (an Ao) |
| OSTLS | Optical Saturation Thermal Lens Spectrometry |
| DHHS | Department Of Health And Human Services |
| PAIR | Preliminary Assessment Information Rule |
| ANICA | Atmospheric Nutrient Input To Coastal Areas |
| PACVD | Plasma-assisted Chemical Vapor Deposition |
| ETU | Ethylene Thiourea (carcinogen |
| EPCE | Enhanced Pre-coat Engineering |