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Medical Term:


Pronunciation: klōr′ēn


  1. A greenish, toxic, gaseous element; atomic no. 17, atomic wt. 35.4527; a halogen used as a disinfectant and bleaching agent in the form of hypochlorite or of chlorine water, because of its oxidizing power.
  2. The molecular form of chlorine (1), Cl2 (dichloride).

[G. chloros, greenish yellow]