A soft, silvery metallic rare-earth element occurring in monazite and bastnaesite used in nuclear reactor control rods and in the manufacture of laser materials and compact discs. Atomic number 66; atomic weight 162.50; melting point 1,412°C; boiling point 2,567°C; specific gravity 8.551; valence 3.
A silver-white chemical element, one of the rare-earth elements, with a great capacity to absorb neutrons and with strong magnetic properties, esp. at very low temperatures: symbol, Dy; at. no. 66
A soft, silvery metallic element of the lanthanide series. Because it has a high melting point and absorbs neutrons well, dysprosium is used to help control nuclear reactions. Atomic number 66; atomic weight 162.50; melting point 1,407°C; boiling point 2,600°C; specific gravity 8.536; valence 3.
A silvery white rare earth metallic element with an atomic number of 66. Dysprosium is from the Greek dysprositos, meaning hard to get at, which undoubtedly was inspired by the difficulty in isolating it. After all, dysprosium was first discovered in 1866 by Paul-*
A metallic chemical element (symbol Dy) with an atomic number of 66.
Origin of dysprosium
- New Latin from Greek dusprositos difficult to approach (from its rarity in nature) dus- dys- prositos approachable (from prosienai to approach) (pros- toward) (ienai i- to go ei- in Indo-European roots)
From American Heritage Dictionary of the English Language, 5th Edition
- From Ancient Greek δυσπρόσιτος (dusprositos, “hard to get”).