caesium


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Related to caesium: caesium 137

cae·si·um

 (sē′zē-əm)
n. Chiefly British
Variant of cesium.

caesium

(ˈsiːzɪəm) or

cesium

n
(Elements & Compounds) a ductile silvery-white element of the alkali metal group that is the most electropositive metal. It occurs in pollucite and lepidolite and is used in photocells. The radioisotope caesium-137, with a half-life of 30.2 years, is used in radiotherapy. Symbol: Cs; atomic no: 55; atomic wt: 132.90543; valency: 1; relative density: 1.873; melting pt: 28.39±0.01°C; boiling pt: 671°C

ce•si•um

(ˈsi zi əm)

n.
a rare highly reactive soft metallic element of the alkali metal group used chiefly in photoelectric cells. Symbol: Cs; at. wt.: 132.905; at. no.: 55; sp. gr.: 1.9 at 20°C; melts at 28.5°C.
[1861; < Latin caesium, neuter of caesius bluish gray (see -ium2); so named from the blue lines in its spectrum]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.caesium - a soft silver-white ductile metallic element (liquid at normal temperatures)caesium - a soft silver-white ductile metallic element (liquid at normal temperatures); the most electropositive and alkaline metal
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.
cesium 137 - a radioactive isotope of cesium used in radiation therapy
pollucite - a rare mineral that is an important source of cesium
Translations
цезий
cesium
cæsium
tseesium
cesium
צזיום
cezij
cézium
sesín
セシウム
caesium
cezis
cesium
cez
cesiu
cézium
cezij
cesium
sezyum

caesium

cesium (US) [ˈsiːzɪəm] Ncesio m

caesium

, (US) cesium
nCäsium nt, → Zäsium nt
References in periodicals archive ?
The technique uses laser-excited caesium atoms to perform terahertz-to-optical conversion, the light from which is captured with a standard camera.
"it was considered premature in 1964 to redefine the second in terms of the caesium frequency because the hydrogen maser was expected to offer, within a short while, a better base for such a redefinition.
By using microwaves to excite electrons from one energy level to another within atoms of caesium, he was able to stabilise the microwaves at a precise and reproducible frequency.
Caesium-137, or radiocaesium, is a radioactive isotope of Caesium formed as one of the more common fission products by the nuclear fission of Uranium-235 and other fissionable isotopes in nuclear reactors and nuclear weapons.
Contamination of soil and water by the radioactive form of caesium is a major problem, since it persists for a long time; levels of radioactivity reduce by half only every 30 years.
Fukushima: More than six times the legal limit of radioactive caesium has been found in beef from Fukushima prefecture, home to Japan s crippled nuclear plant, an official statement said Saturday.
The Royal Free Hospital in London admitted misplacing the caesium 137, after it was used to treat a cancer tumour in March 2001.
The Royal Free Hospital in London admitted misplacing the caesium 137,after it was used to treat a cancer tumour in March 2001.
DEADLY caesium stolen from an iron-smelting plant in Bulgaria may have been smuggled out and into the hands of terrorists.
The mushroom is one of a very few plants which can grow in the alkaline soil conditions created by the caesium.