chemical symbol for sodium, from Latin natrium (see sodium).
Entries linking to na
sodium n.
metallic alkaline element, 1807, coined by English chemist Humphry Davy from soda + -ium. So called because the element was isolated from caustic soda (sodium hydroxide). The chemical symbol Na is from natrium, the name for the element that had been proposed by Berzelius and coined from natron, a name of a type of soda.