aluminum 26


Definition of aluminum 26

: a heavy radioactive isotope of aluminum of mass number 26 that is found in meteorites The aluminum 26 is thought to originate mostly in supernova explosions, where rapid nuclear reactions build up a wide variety of heavy atomic nuclei.— Neil Gehrels, Scientific American, December 1993

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

First Known Use of aluminum 26

1954, in the meaning defined above

Keep scrolling for more

Learn More about aluminum 26

Time Traveler for aluminum 26

Time Traveler

The first known use of aluminum 26 was in 1954

See more words from the same year

Statistics for aluminum 26

Cite this Entry

“Aluminum 26.” Dictionary, Merriam-Webster, Accessed 11 May. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Comments on aluminum 26

What made you want to look up aluminum 26? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

Star Wars Words Quiz

  • cu jedi training
  • The bounty portion of bounty hunters (such as Boba Fett) comes from a Latin word meaning
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!