Containing a relatively large proportion of alkali; alkaline.
obtaining the properties of an alkali. Opposite of acid.
regarding or containing an alkali; having a pH greater than 7
Same as alkaline.
particularly put on the minerals of igneous rocks (when you look at the quantitative classification) or even to magmas and rocks usually, whenever specifically characterized by their particular alkali articles: in difference from alkaline, which implies the chemical property of alkalinity.