alkali metal

/ˌælkəˈlaɪ ˌmɛdl/

Other forms: alkali metals

Definitions of alkali metal

1. noun

   any of the monovalent metals of group I of the periodic table (lithium or sodium or potassium or rubidium or cesium or francium)
   “the hydroxides of the alkali metals are strongly alkaline”

   synonyms: alkaline metal

   type of:

   metal, metallic element

   any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.