Webster's Revised Unabridged Dictionary · 1913

Alkaline

Alkaline (?; 277) , adjective

[Compare French alcalin.]

Of or pertaining to an alkali or to alkalies; having the properties of an alkali.
Collocations (3)
Alkaline earths , certain substances, as lime, baryta, strontia, and magnesia, possessing some of the qualities of alkalies.
Alkaline metals , potassium, sodium, casium, lithium, rubidium.
Alkaline reaction , a reaction indicating alkalinity, as by the action on limits, turmeric, etc.