English noun: atomic number 17 | |||
1. | atomic number 17 (substance) 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) | ||
Synonyms | chlorine, Cl | ||
Broader (hypernym) | chemical element, element, gas, halogen | ||
Narrower (hyponym) | radiochlorine | ||
Substance meronym | common salt, sodium chloride | ||