| ATR | Atractyloside |
|---|---|
| ATR | Atropine |
| ATR | Attenuated Total Reflectance |
| ATR | Attenuated Total Reflection |
| ATR | acid tolerance response |
| ATR | against the rule |
| ATR FT-IR | Attenuated total reflection Fourier transform infrared spectroscopy |
| ATR-FTIR | Attenuated Total Reflectance Fourier-Transform Infrared |
| ATR-FTIR | Attenuated total reflection Fourier transform infrared |
| ATRA | All Trans Retinoic Acid |