HyperDic: atomic_number_17

English > 1 sense of the expression atomic number 17:
NOUNsubstanceatomic number 17, chlorine, Cla common nonmetallic element belonging to the halogens
English > atomic number 17: 1 sense > noun 1, substance
MeaningA 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).
Synonymschlorine, Cl
NarrowerradiochlorineA radioactive isotope of chlorine
Broaderchemical element, elementAny 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
gasA fluid in the gaseous state having neither independent shape nor volume and being able to expand indefinitely
halogenAny of five related nonmetallic elements (fluorine or chlorine or bromine or iodine or astatine) that are all monovalent and readily form negative ions
Substance ofsodium chloride, common saltA white crystalline solid consisting mainly of sodium chloride (NaCl)
Spanishcloro, número atómico 17
CatalanCl, clor, número atòmic 17

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