a. Obs. 7–8 alc-. [f. ALKALI + -OUS: cf. ALKALI-OUS.] = ALKALINE.
1683. Pettus, Fleta Min., II. 5. Salts of that Quality are called alcalous.
1742. Lond. & Country Brewer, I. (ed. 4), 11. An alcalous and balsamic Quality.
