HyperDic: atomic_number_53

English > 1 sense of the expression atomic number 53:
NOUNsubstanceatomic number 53, iodine, iodin, Ia nonmetallic element belonging to the halogens
English > atomic number 53: 1 sense > noun 1, substance
MeaningA nonmetallic element belonging to the halogens; used especially in medicine and photography and in dyes; occurs naturally only in combination in small quantities (as in sea water or rocks).
Synonymsiodine, iodin, I
Narroweriodine-125light radioactive isotope of iodine with a half-life of 60 days
iodine-131Heavy radioactive isotope of iodine with a half-life of 8 days
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
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 ofseawater, saltwater, brinewater containing salts
Spanishiodo, número atómico 53, yodo
Catalaniode, número atòmic 53

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