alkali metal: Meaning and Definition of

al'kali met"al

Pronunciation: [key]
— Chem. Chem.
  1. any of the group of univalent metals including potassium, sodium, lithium, rubidium, cesium, and francium, whose hydroxides are alkalis.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.