alkali

al·ka·li

A0203100 (ăl′kə-lī′)n. pl. al·ka·lis or al·ka·lies 1. A carbonate or hydroxide of an alkali metal, the aqueous solution of which is bitter, slippery, caustic, and characteristically basic in reactions.2. Any of various soluble mineral salts found in natural water and arid soils.3. Alkali metal.4. A substance having highly basic properties; a strong base.

---

[Middle English, alkaline substance from calcined plant ashes, from Medieval Latin, from Arabic al-qily, the ashes, lye, potash : al-, the + qily, ashes (from qalā, to fry, roast; see qly in Semitic roots).]

alkali

(ˈælkəˌlaɪ) n, pl -lis or -lies1. (Chemistry) chem a soluble base or a solution of a base2. (Geological Science) a soluble mineral salt that occurs in arid soils and some natural waters[C14: from Medieval Latin, from Arabic al-qili the ashes (of the plant saltwort)]

al•ka•li

(ˈæl kəˌlaɪ)

n., pl. -lis, -lies,
adj. n. 1. a. any of various bases, the hydroxides of the alkali metals and of ammonium, that neutralize acids to form salts and turn red litmus paper blue. b. any of various other active bases, as calcium hydroxide. 2. a soluble mineral salt or a mixture of soluble salts, present in some soils, esp. in arid regions, and detrimental to the growing of most crops. adj. 3. alkaline. [1300–50; < Middle French alcali < dial. Arabic al-qalī, saltwort ashes]

al·ka·li

(ăl′kə-lī′) Plural alkalis or alkalies A chemical that acts like a base and reacts strongly with acids, especially a hydroxide or carbonate of an alkali metal.

alkali

A solution of a substance in water which has a pH of more than 7 and has an excess of hydroxyl ions in the solution.

Thesaurus

Noun	1.	alkali - any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water; "bases include oxides and hydroxides of metals and ammonia"basepyridine - a toxic colorless flammable liquid organic base with a disagreeable odor; usually derived from coalpurine - a colorless crystalline organic base containing nitrogen; the parent compound of various biologically important substancespurine - any of several bases that are derivatives of purinechemical compound, compound - (chemistry) a substance formed by chemical union of two or more elements or ingredients in definite proportion by weightglyoxaline, imidazole, iminazole - an organic base C3H4N2; a histamine inhibitorcyanuramide, melamine - a white crystalline organic base; used mainly in making melamine resinspyrimidine - any of several basic compounds derived from pyrimidine
	2.	alkali - a mixture of soluble salts found in arid soils and some bodies of water; detrimental to agriculturesalt - a compound formed by replacing hydrogen in an acid by a metal (or a radical that acts like a metal)

Translations

碱

alkali

(ˈӕlkəlai) noun a substance, the opposite of acid, such as soda. 鹼 碱ˈalkaline (-lain) adjective 鹼性的 碱性的