English
Detailed Synonyms for atomic number 69 in English
atomic number 69:
atomic number 69 [the ~] noun
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the atomic number 69
– 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 1the Tm; the atomic number 69; the thulium– 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 1