radium

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Related to Ra-226: Element 88

ra·di·um

 (rā′dē-əm)
n. Symbol Ra
A rare, brilliant white, luminescent, highly radioactive metallic element found in very small amounts in uranium ores, having more than 40 isotopes and isomers with mass numbers between 201 and 234, of which Ra-226 with a half-life of 1,600 years is the most common. It is used as a neutron source for some research purposes and was formerly widely used in cancer radiotherapy and as a constituent of luminescent paints. Atomic number 88; melting point 696°C; boiling point 1,737°C; specific gravity 5; valence 2. See Periodic Table.

[Latin radius, ray; see ray1 + -ium.]

radium

(ˈreɪdɪəm)
n
(Elements & Compounds)
a. a highly radioactive luminescent white element of the alkaline earth group of metals. It occurs in pitchblende, carnotite, and other uranium ores, and is used in radiotherapy and in luminous paints. Symbol: Ra; atomic no: 88; half-life of most stable isotope, 226Ra: 1620 years; valency: 2; relative density: 5; melting pt: 700°C; boiling pt: 1140°C
b. (as modifier): radium needle.
[C20: from Latin radius ray]

ra•di•um

(ˈreɪ di əm)

n.
a highly radioactive metallic element whose decay yields radon gas and alpha rays. Symbol: Ra; at. wt.: 226; at. no.: 88.
[< French (1898), = Latin rad(ius) ray (see radius) + -ium -ium2]

ra·di·um

(rā′dē-əm)
Symbol Ra A rare, bright-white, highly radioactive element that is an alkaline-earth metal and gives off its own light. It occurs naturally in very small amounts in ores and minerals containing uranium. Radium is used as a source of radon gas for the treatment of disease and as a neutron source for scientific research. The most common of its several isotopes has a half-life of 1,622 years. Atomic number 88. See Periodic Table.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.radium - an intensely radioactive metallic element that occurs in minute amounts in uranium oresradium - an intensely radioactive metallic element that occurs in minute amounts in uranium ores
metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
uranium ore - any ore from which uranium can be extracted
Translations
راديوم: عُنْصُر فِلِزّي مُشِع
радий
rádium
radium
raadium
radij
rádium
radíum
radis
rad
radiu
rádium

radium

[ˈreɪdɪəm] Nradio m

radium

[ˈreɪdiəm] nradium m

radium

nRadium nt; radium therapy or treatment (Med) → Radiumtherapie f

radium

[ˈreɪdɪəm] nradio

radium

(ˈreidiəm) noun
a radioactive metallic element, used in treating certain diseases.

ra·di·um

L. radium, radio, elemento metálico radioactivo y fluorescente usado en algunas de sus variaciones en el tratamiento de tumores malignos;
___needleaguja de radio, divisa en forma de aguja que contiene radio usado en radioterapia.

radium

n radio (elemento)
References in periodicals archive ?
The total exposure dose rate of reference organisms having received the largest exposure to natural radionuclides in Lake Druksiai Crustacean Th-232 <1% Ra-226 9% U-238 90% Vascular plant Th-232 <1% Ra-226 2% U-238 97% Insect larvae Th-232 <1% Ra-226 9% U-238 90% Bivalve mollusc Th-232 <1% Ra-226 20% U-238 79% Note: Table made from pie chart.
With these limitations, the existence of historical data on Ra-226 and Rn-222 was a major strength, and considered to overcome the compromise of using older BVS records for cleft births for 1990 to 1994.
Most of the attention of the public-health community has focused on Ra-226 and Ra-228 because they are currently the only isotopes of radium regulated under the Safe Drinking Water Act and because they appear to be more abundant in nature and have longer half-lives than Ra-223 and Ra-224 (Molinari & Snodgrass, 1990).