| Title | iodine |
|---|---|
| Text |
Merriam-Webster's Collegiate Dictionary io·dine USAGE often attributive ETYMOLOGY French iode, from Greek ioeidēs violet colored, from ion violet DATE 1814 1. a nonmetallic halogen element obtained usually as heavy shining blackish-gray crystals and used especially in medicine, photography, and analysis — see element table2. a tincture of iodine used especially as a topical antiseptic English Etymology iodine 1814, formed by British chemist Sir Humphry Davy from Fr. iode"iodine," coined 1812 by Fr. chemist Joseph Louis Gay-Lussac from Gk. ioeides "violet-colored," from ion "violet" + eidos"appearance" (see -oid). So called from the color of the vapor given off when the crystals are heated. Oxford Advanced Learner's Dictionary-牛津双解-OALD7 iodine iod·ine / 5aiEdi:n; NAmE -dain / noun[U] (symb I) a chemical element. Iodine is a substance found in sea water. A liquid containing iodine is sometimes used as an antiseptic (= a substance used on wounds to prevent infection). 碘 Webster's Third New International Dictionary, Unabridged io·dine noun also io·din \ˈīəˌdīn also -_də̇n or -dən or -ˌdēn\ (-s) Etymology: French iode iodine (from Greek ioeidēs purple, violet colored, from ion violet + -oeidēs -oid) + English -ine (II) or -in — more at violet : a nonmetallic univalent and polyvalent element belonging to the halogens that is obtained usually as heavy shining blackish gray crystals subliming to a violet-colored irritating vapor, that occurs naturally only in combination in small quantities especially in seawater, rocks, soils, and underground brines and in marine plants and animals, that is essential for the normal functioning of the thyroid gland of all vertebrates, that is usually extracted from the ashes of seaweeds, from Chile saltpeter, or from oil-well brines, and that is used chiefly in medicine (as in antisepsis and in the treatment of cretinism and goiter), photography, and analysis— symbol I; see element table |
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Iodide or noun a salt io·dide international scientific
Previous card: Irremediable adjective merriam-webster's collegiate remediable an error noun
Up to card list: English learning