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Definition of polonium : A supposed new element, a radioactive substance discovered by M. and MMe. Curie in pitchblende. It is closely related chemically to bismuth. It emits only alpha rays and is perhaps identical with radium F.

Synonyms:

atomic number 84, petty officer, Po

europium, iodine, cobalt, zinc, neodymium, arsenic, carbon, argon, beryllium, silver, plutonium, boron, promethium, phosphorus, antimony, radium, americium, chlorine, sulfur, manganese, tellurium, cadmium, erbium, copper, technetium, praseodymium, lutetium, cesium, fermium, germanium, neptunium, osmium, lead, thallium, oxygen, mendelevium, californium, rhodium, xenon, berkelium, curium, thulium, ruthenium, lithium, gallium, niobium, magnesium, mercury, iron, uranium, palladium, tin, bromine, terbium, cerium, krypton, nickel, holmium, scandium, potassium, rubidium, thorium, helium, nobelium, strontium, hydrogen, indium, neon, gold, hafnium, vanadium, sodium, bismuth, molybdenum, rhenium, ytterbium, einsteinium, gadolinium, calcium, nitrogen, platinum, titanium, dysprosium, lanthanum, francium, iridium, chromium, selenium, aluminum, yttrium, tungsten, silicon, astatine, actinium, tantalum, fluorine, barium, radon, zirconium, samarium, element, protactinium

Usage examples:

• As Scott threw open the cargo doors and dropped to the rocky ground, he saw the crewmen checking blasters and the slender polonium tubes that could permanently blind a man. - "Feline Red", Robert Sampson.