chlorine
/ˈklɔrin/
noun
- A greenish-yellow gas with a strong smell, used to kill bacteria in water and to make cleaning products.
- Bleach contains chlorine and is used to whiten clothes and disinfect surfaces.
- You can smell the chlorine as soon as you walk into the indoor swimming pool.
- The water treatment plant adds a small amount of chlorine to kill germs in the drinking water.