europium

eu·ro·pi·um  (y-rp-m)

n. Symbol Eu

A silvery-white, soft, rare-earth element occurring in monazite and bastnaesite and used to dope lasers and to absorb neutrons in research. Atomic number 63; atomic weight 151.96; melting point 826°C; boiling point 1,439°C; specific gravity 5.259; valence 2, 3. See Table at element.

---

[After Europe.]

---

europium

Noun

Chem a silvery-white element of the lanthanide series Symbol: Eu[after Europe]

---

europium  (y-rp-m)

Symbol Eu

A very rare, silvery-white metallic element that is the softest member of the lanthanide series. It is used in making color television tubes and lasers and as a neutron absorber in nuclear research. Atomic number 63; atomic weight 151.96; melting point 826°C; boiling point 1,439°C; specific gravity 5.259; valence 2, 3. See Periodic Table.

Thesaurus

Noun

1.

europium - a bivalent and trivalent metallic element of the rare earth group atomic number 63, Eu metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc. monazite - a reddish-brown mineral containing rare earth metals; an important source of thorium and cerium