chlo·rine /ˈklorˌin, ˈklɔr, ən/
 氯


 chlo·rine /ˈklo(ə)rˌɪn, ˈklɔ(ə)r, ən/ 名詞



 Chlo·rine n.  Chem. One of the elementary substances, commonly isolated as a greenish yellow gas, two and one half times as heavy as air, of an intensely disagreeable suffocating odor, and exceedingly poisonous. It is abundant in nature, the most important compound being common salt (Sodium chloride). It is powerful oxidizing, bleaching, and disinfecting agent. Symbol Cl. Atomic weight, 35.4.
 Chlorine family, the elements fluorine, chlorine, bromine, and iodine, called the halogens, and classed together from their common peculiarities.

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 chlorine
      n : a common nonmetallic element belonging to the halogens; best
          known as a heavy yellow irritating toxic gas; used to
          purify water and as a bleaching agent and disinfectant;
          occurs naturally only as a salt (as in sea water) [syn: Cl,
           atomic number 17]


 chlorine
 Symbol: Cl
 Atomic number: 17
 Atomic weight: 35.453
 Halogen element. Poisonous greenish-yellow gas. Occurs widely in nature as
 sodium chloride in seawater. Reacts directly with many elements and
 compounds, strong oxidizing agent. Discovered by Karl Scheele in 1774.
 Humphrey David confirmed it as an element in 1810.