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.
apatite a common complex mineral consisting of calcium fluoride phosphate or calcium chloride phosphate; a source of phosphorus
monazite a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium
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= antonym
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Wiktionary
Substantiv
terbium -
A metallic chemical element symbol Tb with an atomic number of 65.
Wikipedia
Terbium is a chemical element with the symbol Tb and atomic number 65. It is a silvery-white rare earth metal that is malleable, ductile and soft enough to be cut with a knife. Terbium is never found in nature as a free element, but it is contained in many minerals, including cerite, gadolinite, monazite, xenotime and euxenite.
OmegaWiki Dictionary
Ω
terbium Chemical element with symbol Tb and atomic number 65, silvery white lanthanide.
