Definition of einsteinium in English:

Share this entry

einsteinium

Pronunciation: /īnˈstīnēəm/

noun

The chemical element of atomic number 99, a radioactive metal of the actinide series. Einsteinium does not occur naturally and was discovered in 1953 in debris from the first hydrogen bomb explosion. (Symbol: Es)
Example sentences
  • They were named after two of the century's most creative physicists: einsteinium and fermium.
  • All isotopes of einsteinium are radioactive, the most stable being einsteinium - 252 with a half life of 20.47 days.
  • Atomic number 101 is a radioactive transuranic element synthesized by bombarding einsteinium with alpha particles.

Origin

1950s: from the name of Albert Einstein, Albert + -ium.

For editors and proofreaders

Syllabification: ein·stein·i·um

Share this entry
 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.