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ATOMIC NUMBER 17
I. (noun)
Sense 1
Meaning:
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:
atomic number 17; chlorine; Cl
Classified under:
Hypernyms ("atomic number 17" is a kind of...):
chemical element; element (any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter)
gas (a fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely)
halogen (any of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions)
Hyponyms (each of the following is a kind of "atomic number 17"):
radiochlorine (a radioactive isotope of chlorine)
Holonyms ("atomic number 17" is a substance of...):
common salt; sodium chloride (a white crystalline solid consisting mainly of sodium chloride (NaCl))
