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Definition of tantalum :
A rare nonmetallic element found in certain minerals, as tantalite, samarskite, and fergusonite, and isolated as a dark powder which becomes steel- gray by burnishing. Symbol Ta. Atomic weight 182. 0. Formerly called also tantalium.
Synonyms:
element (part of speech: noun)
europium, iodine, cobalt, zinc, neodymium, arsenic, carbon, argon, beryllium, silicon, plutonium, boron, praseodymium, phosphorus, antimony, protactinium, americium, chlorine, strontium, manganese, tellurium, cadmium, erbium, copper, technetium, potassium, lutetium, cesium, fermium, germanium, neptunium, osmium, lead, thallium, oxygen, mendelevium, californium, rhenium, xenon, berkelium, curium, thulium, rubidium, lithium, gallium, niobium, magnesium, mercury, iron, uranium, palladium, tin, bromine, terbium, cerium, krypton, nickel, holmium, samarium, polonium, rhodium, thorium, helium, nobelium, sodium, hydrogen, indium, neon, gold, hafnium, vanadium, silver, bismuth, molybdenum, radon, ytterbium, einsteinium, gadolinium, calcium, nitrogen, platinum, titanium, dysprosium, lanthanum, francium, iridium, chromium, scandium, aluminum, yttrium, tungsten, selenium, astatine, actinium, sulfur, fluorine, barium, radium, zirconium, ruthenium, element, promethium
