alkali  /'ælkəl,ɑɪ/

共發現 4 筆關於 [alkali] 的資料 (解釋內文之英文單字均可再點入查詢)

資料來源(1): pydict data [pydict]

  alkali
  鹼

資料來源(2): Webster's Revised Unabridged Dictionary (1913) [web1913]

  Alkali \Al"ka*li\, n.
     Soluble mineral matter, other than common salt, contained in
     soils of natural waters. [Western U. S.]

資料來源(3): Webster's Revised Unabridged Dictionary (1913) [web1913]

  Alkali \Al"ka*li\ (?; 277), n.; pl. {Alkalis} or {Alkalies}. [F.
     alcali, ultimately fr. Ar. alqal[=i] 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.

資料來源(4): WordNet (r) 2.0 [wn]

  alkali
       n 1: 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" [syn: {base}]
       2: a mixture of soluble salts found in arid soils and some
          bodies of water; detrimental to agriculture
       [also: {alkalies} (pl)]