- noun a silvery-grey metallic element used in superconducting alloys and permanent magnets
- A dark gray metal whose atomic number is 39. It is soft, malleable, and ductile, and exhibits allotropy. It has about 30 known isotopes, of which one is stable. Its applications include its use as a phosphor, in lasers, semiconductors, ceramics, and high-temperature alloys. Its chemical symbol is Y.
- chemical symbol Y
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