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 ?
As mentioned previously, radionuclides Sr-90 and Ra-226 in soil and
In most cases, the radiation was caused by fluorescent coating containing Ra-226 on the dials of various control devices or separate objects contaminated with natural or artificial radionuclides, the report said.
The new production process for Ac-227 begins with recovering radium-226 (Ra-226) from legacy medical devices secured by the DOE Isotope Program and diverted from a radioactive waste landfill.
Search for Possible Solar Influences in Ra-226 Decays.
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.
Summary of the activity per unit mass measured for the different radionuclides that constitute some of the measured NORM samples Sample Radionuclide Activity (Bq/kg) Uncertainty (%) Coal K-40 207 30 Ra-226 10 45 Th-232 17 45 Roofing tiles K-40 3518 30 Ra-226 108 35 Th-232 164 35 U-238 4 45 Slate K-40 1152 30 Ra-226 4 40 Th-232 16 30 U-238 1 45 Hay K-40 4409 30 Cat litter -1 K-40 1456 30 Ra-226 58 35 Th-232 100 35 U-238 92 35 Cat litter - 2 K-40 408 30 Ra-226 209 30 Th-232 226 30 U-238 380 30 Cat litter -3 K-40 468 30 Ra-226 187 35 Th-232 237 30 U-238 198 35 Cat litter - 4 K-40 448 30 Ra-226 404 30 Th-232 434 30 U-238 382 30 Ice melt K-40 14607 30 Fertilizer K-40 8889 35 Table 2.