However, it is important to note that "uppumavu" is not a common term in English. It is more likely that you would hear or see:
* Salt powder: This is the most common and direct translation.
* Salt seasoning: This emphasizes the use of the salt powder as a seasoning for food.
* Salty powder: This focuses on the taste of the powder.
The specific translation you use will depend on the context in which you are using the term.