One of a class of substances, as soda or potash, having the common properties of combining which acids to form salt, of combining with fats to form soap, and of changing the tint of many coloring matters; a base.

【化】碱质(如碳酸纳、碳酸钾等，能于酸类化合而成盐类，与脂肪化合而成肥皂，及改变有色物的色调)；强碱。

Soluble mineral salt or salts found in the soils, esp. of arid regions, and detrimental to agriculture.

【农】(尤指干燥地区，某种土壤中所含的一种)可溶性无机盐(对多数农作物有害)。