word-forming element in modern use meaning "good, well," from comb. form of Greek eus "good," eu "well" (adv.), also "luckily, happily," from PIE *(e)su- "good" (cf. Sanskrit su- "good," Avestan hu- "good").
Eu
The symbol for the element europium.
eu- pref.
Good; well; true: eupepsia.
A derivative of a specified substance: euglobulin.
Eu The symbol for europium. |
europium (y-rō'pē-əm) 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. |