1.
[syn: alkali metal, alkaline metal]
The Collaborative International Dictionary of English v.0.48:
Alkali metal \Alkali metal\
Any one of the univalent metals of group I of the periodic
table of the elements, including lithium, sodium, potassium,
rubidium, cesium, and francium. The hydroxides of these
metals are soluble in water and form strongly basic
solutions.
[PJC.]
WordNet (r) 3.0 (2006):
alkali metal
n 1: 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" [syn: alkali metal, alkaline metal]