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WORDNET DICTIONARY
CIDE DICTIONARY
OXFORD DICTIONARY
DEVIL DICTIONARY
THESAURUS
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 : 
Noun
 : 
ra=di=um

WORDNET DICTIONARY

Noun has 1 sense

CIDE DICTIONARY

n. Array
     An intensely radioactive metallic element found (combined) in minute quantities in pitchblende, and various other uranium minerals. Symbol, Ra; atomic weight, 226.4. Radium was discovered by M. and Mme. Curie, of Paris, who in 1902 separated compounds of it by a tedious process from pitchblende. Its compounds color flames carmine and give a characteristic spectrum. It is divalent, resembling barium chemically. The main isotope of radium found in pitchblende, radium-226, has a half-life of 1620 years, decaying first by alpha emission to radon.

OXFORD DICTIONARY

, n. Chem. a radioactive metallic element orig. obtained from pitchblende etc., used esp. in luminous materials and in radiotherapy.

Idiom
radium bomb a container holding a large quantity of radium and used in radiotherapy as a source of gamma rays. radium emanation = RADON. radium therapy the treatment of disease by the use of radium.
Usage
Symb.: Ra.
Etymology
L radius ray

DEVIL DICTIONARY

n. A mineral that gives off heat and stimulates the organ that a scientist is a fool with.

THESAURUS

acid, actual cautery, americium, astatine, atomic cocktail, berkelium, brand, brand iron, branding iron, caustic, cauter, cauterant, cauterizer, cautery, cobalt, corrosive, curium, einsteinium, electrocautery, escharotic, fermium, francium, hahnium, hot iron, lunar caustic, mendelevium, mordant, moxa, neptunium, plutonium, polonium, potential cautery, promethium, protactinium, radiocalcium, radiocarbon, radioelement, radioiodine, radioisotope, radiosodium, radon, tagged element, technetium, tracer, uranium

ROGET THESAURUS

Calefaction

N calefaction, increase of temperature, heating, calefaction, tepefaction, torrefaction, melting, fusion, liquefaction, burning, ambustion, combustion, incension, accension, concremation, cremation, scorification, cautery, cauterization, ustulation, calcination, cracking, refining, incineration, cineration, carbonization, cupellation, ignition, inflammation, adustion, flagration, deflagration, conflagration, empyrosis, incendiarism, arson, auto dafe, boiling, coction, ebullition, estuation, elixation, decoction, ebullioscope, geyser, distillation (vaporization), furnace, blanket, flannel, fur, wadding, clothing, still, refinery, fractionating column, fractionating tower, cracking tower, match, incendiary, petroleuse, cauterizer, caustic, lunar caustic, alkali, apozem, moxa, acid, aqua fortis, aqua regia, catheretic, nitric acid, nitrochloro-hydric acid, nitromuriatic acid, radioactivity, gamma rays, alpha particles, beta rays, X-rays, radiation, cosmic radiation, background radiation, radioactive isotopes, tritium, uranium, plutonium, radon, radium, sunstroke, coup de soleil, insolation, pottery, ceramics, crockery, porcelain, china, earthenware, stoneware, pot, mug, terra cotta, brick, clinker, cinder, ash, scoriae, embers, soot, slag, coke, carbon, charcoal, wood alcohol, turpentine, tea tree oil, gasoline, kerosene, naptha, fuel oil (fuel), wax, paraffin, residue, tar, inflammability, combustibility, diathermancy, transcalency, conduction, convection, radiation, radiant heat, heat conductivity, conductivity, thermal expansion, coefficient of expansion, heated, molten, sodden, r_echauff_e, heating, adust, inflammable, combustible, diathermal, diathermanous, burnt, volcanic, radioactive.

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