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atomic number 64 |
atomic number 65 |
atomic number 66 |
atomic number 67 |
atomic number 68 |
atomic number 69
| atomic number 7
| atomic number 70
| atomic number 71
| atomic number 72
| atomic number 73
atomic number 69
WORDNET DICTIONARY
Noun atomic number 69 has 1 sense
- atomic number 69(n = noun.substance) thulium, tm - 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; Array is a kind of metal, metallic element
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