Definition of atomic number 69
English to English noun - a soft silvery metallic element of the rare earth group; isotope 170 emits X-rays and is used in small portable X-ray machines; it occurs in monazite and apatite and xenotime
source: WordNet 3.0
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atomic number 69, atomic number 9, atomic number 6, atomic number 93, atomic number 86, atomic number 79, atomic number 63, atomic number 36, atomic number 90, atomic number 26, atomic number 56, atomic number 66, atomic number 67, atomic number 16, atomic number 99, atomic number 95, atomic number 19, atomic number 97, atomic number 49, atomic number 98
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