iodine

Sometimes i·o·din

[ahy-uh-dahyn, -din, ahy-uh-deen]

noun

Chemistry.

1. a nonmetallic halogen element occurring at ordinary temperatures as a grayish-black crystalline solid that sublimes to a dense violet vapor when heated: used in medicine as an antiseptic. I; 126.904; 53; (solid) 4.93 at 20°C.

iodine

/ ˈaɪəˌdiːn /

noun

1. a bluish-black element of the halogen group that sublimates into a violet irritating gas. Its compounds are used in medicine and photography and in dyes. The radioisotope iodine-131 ( radioiodine ), with a half-life of 8 days, is used in the diagnosis and treatment of thyroid disease. Symbol: I; atomic no: 53; atomic wt: 126.90447; valency: 1, 3, 5, or 7; relative density: 4.93; melting pt: 113.5°C; boiling pt: 184.35°C

iodine

1. A shiny, grayish-black element of the halogen group. It is corrosive and poisonous and occurs in very small amounts in nature except for seaweed, in which it is abundant. Iodine compounds are used in medicine, antiseptics, and dyes. Atomic number 53; atomic weight 126.9045; melting point 113.5°C; boiling point 184.35°C; specific gravity (solid, at 20°C) 4.93; valence 1, 3, 5, 7.

2. See Periodic Table

Word History and Origins

Origin of iodine¹

First recorded in 1814; from French iode + -ine ² ( def. 2 ); introduced by H. Davy. Ultimately from Greek īṓdēs, originally “rust-colored”, but by folk etymology taken as í(on) “violet” + -ōdēs noun suffix; -ode ¹ ( def. )

Word History and Origins

Origin of iodine¹

C19: from French iode, from Greek iōdēs rust-coloured, but taken to mean violet-coloured, through a mistaken derivation from ion violet

Example Sentences

There were even rudimentary first-aid supplies: bandages, iodine, and so forth.

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But in the event of a nuclear accident, people who may be exposed to iodine 131 can take potassium iodide tablets, which provide enough non-radioactive iodine 127 to saturate the thyroid.

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Ms Damari was also shot in the leg, and previously said she had only received an out-of-date bottle of iodine to treat her wounds while in captivity.

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The study published in The American Journal of Clinical Nutrition checked the amounts of choline and iodine in nonprescription and prescription prenatal vitamins.

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Their checklist also includes iodine tablets, as well as easy-to-cook food, pet food and a backup power supply.

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