English > iodine: 2 senses > noun 1, substanceMeaning | A 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). |
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Synonyms | iodin, I, atomic number 53 |
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Narrower | iodine-125 | light radioactive isotope of iodine with a half-life of 60 days |
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iodine-131 | Heavy radioactive isotope of iodine with a half-life of 8 days |
Broader | 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 |
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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 |
Substance of | seawater, saltwater, brine | water containing salts |
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Spanish | iodo, número atómico 53, yodo |
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Catalan | iode, número atòmic 53 |
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Adjectives | iodinated, iodized, iodised | treated with iodine |
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Verbs | iodinate | cause to combine with iodine |
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iodize, iodise | treat with iodine |