1955, in the meaning defined above
New Latin, from Albert Einstein
Time Traveler for einsteinium
See more words from the same year
Einstein law of photochemical equivalence
Cite this Entry
“Einsteinium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/einsteinium. Accessed 7 Jul. 2022.
More Definitions for einsteinium
More from Merriam-Webster on einsteinium
Britannica.com: Encyclopedia article about einsteinium
See Definitions and Examples »
Get Word of the Day daily email!
Words Named After People
Test your knowledge - and maybe learn something along the way.
A daily challenge for crossword fanatics.
Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!
As illustrated by some very smart pups
Bikini, bourbon, and badminton were places first
Do you take pride in Pride?
Look up any year to find out
How to use a word that (literally) drives some pe...
We're intent on clearing it up
Editor Emily Brewster clarifies the difference.
"The public is a hot mess"
You’re gonna need some moxie to ace this quiz
Take the quiz
Take a (break/brake) and (pore/pour) over this (c...
Test your knowledge - and maybe learn something a...
Can you outdo past winners of the National Spelli...