Definition of Alkli
Al"ka*li (?; 277), n.; pl.
Alkalis or Alkalies (&?;). [F.
alcali, ultimately fr. Ar. alqalī ashes of the plant
saltwort, fr. qalay to roast in a pan, fry.] 1.
Soda ash; caustic soda, caustic potash, etc.
2. (Chem.) One of a class of caustic bases,
such as soda, potash, ammonia, and lithia, whose distinguishing
peculiarities are solubility in alcohol and water, uniting with oils and
fats to form soap, neutralizing and forming salts with acids, turning to
brown several vegetable yellows, and changing reddened litmus to
blue.
Fixed alkalies, potash and soda. --
Vegetable alkalies. Same as Alkaloids. --
Volatile alkali, ammonia, so called in distinction
from the fixed alkalies.
Al"ka*li (?), n. Soluble mineral
matter, other than common salt, contained in soils of natural
waters. [Western U. S.]
Al"ka*li (?), n. Soluble mineral
matter, other than common salt, contained in soils of natural
waters. [Western U. S.]
- Webster's Unabridged Dictionary (1913)
- Soda ash; caustic soda, caustic potash, etc.
- (Chemistry) One of a class of caustic bases, such as soda, potash, ammonia, and lithia, whose distinguishing peculiarities are solubility in alcohol and water, uniting with oils and fats to form soap, neutralizing and forming salts with acids, turning to brown several vegetable yellows, and changing reddened litmus to blue.
- (Western United States) Soluble mineral matter, other than common salt, contained in soils of natural waters.
- The Nuttall Encyclopedia
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