Definition of mineral alkali in English:

mineral alkali

Pronunciation /ˌmɪn(ə)rəl ˈalkəlʌɪ/ /ˌmɪn(ə)r(ə)l ˈalkəlʌɪ/

noun

Chemistry
  • A soluble inorganic base; especially an alkaline salt of sodium or (in later use) of any metal in group one or two of the periodic table.

Origin

Mid 18th century; earliest use found in Charles Lucas (1713–1771), politician and physician. From mineral + alkali [adjective].