Definition of atomic number 72
English to English noun - a grey tetravalent metallic element that resembles zirconium chemically and is found in zirconium minerals; used in filaments for its ready emission of electrons
source: WordNet 3.0
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atomic number 72, atomic number 7, atomic number 2, atomic number 28, atomic number 21, atomic number 70, atomic number 76, atomic number 78, atomic number 32, atomic number 29, atomic number 27, atomic number 97, atomic number 73, atomic number 57, atomic number 17, atomic number 26, atomic number 79, atomic number 67, atomic number 37, atomic number 12
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