Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun na

1 sense of na

Sense 1
sodium, Na, atomic number 11 -- (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))
       => metallic element, metal -- (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)