ET
| Abbreviation | Meaning | Tamil Meaning | Category |
|---|---|---|---|
| ET | External Tank | - | Atmospheric Research Center |
| ET | Ephemeris Time | - | Atmospheric Research Center |
| ET | Endotracheal Tube | - | Medical(slang) |
| ET | Edge Thickness | - | Organizations |
| ET | Elapsed Time | - | Organizations |
| ET | Elevated Temperature | - | Organizations |
| ET | Event Timer | - | Organizations |
| ET | External Tank | - | Organizations |
| ET | External Tank | - | Organizations |
| ET | Estonian Language (ISO 639-1 Code) | - | Astronomy |
| ET | Ethiopia (ISO 3166 Digram; FIPS 10-4 Country Code) - Exatesla -Extra Terrestrial | - | Astronomy |
| ET | Evapotranspiration | - | Business and Finance |