| NOUN | substance | terbium, Tb, atomic number 65 | a metallic element of the rare earth group |
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| Meaning | A metallic element of the rare earth group; used in lasers; occurs in apatite and monazite and xenotime and ytterbite. | |
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| Synonyms | Tb, atomic number 65 | |
| Broader | metallic element, metal | Any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. |
| Substance of | apatite | A common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate |
| gadolinite, ytterbite | A mineral that is a source of rare earths | |
| monazite | A reddish-brown mineral containing rare earth metals | |
| Spanish | número atómico 65, Tb, terbio | |
| Catalan | número atòmic 65, Tb, terbi | |
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