| Acronym | Meaning |
| TMTOWTDI | There's More Than One Way To Do It (from Perl) |
| IMPATT | IMPact Avalanche Transit Time Diode |
| PWL | PieceWise Linear (describing A Mathematical Function) |
| PLM | Polarized Light Microscope/Microscopy |
| ETM | Enhanced Thematic Mapper |
| DXA | Dual-energy X-ray Absorptiometry |
| GYD | Guyana Dollar (ISO 4217 Currency Code) |
| SRSP | Science And Religion In Schools Project |
| AK | Akan Languages (ISO 639-1 Code) |
| LGS | Landsat Ground Station |