chlorine
klaw reen
- 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)
- It has since announced the production of two generations of chlorine-free cooling units, well before the Montreal Accords or the still unratified Kyoto Accords have come into play.
- Volcanic chlorine, for example, is water soluble, so it is quickly removed by rain.
- These systems are the most popular and the most effective in reducing so-called aesthetic contaminants like chlorine and sediment.