What does NA mean in Regional?
This page is about the meanings of the acronym/abbreviation/shorthand NA in the field in general and in the Regional terminology in particular.
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What does NA mean?
- sodium, Na, atomic number 11(noun)
- a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)