antihelium

noun

an·​ti·​helium
" +
: the antimatter counterpart of helium

Word History

Etymology

anti- entry 1 + helium

First Known Use

1963, in the meaning defined above

Time Traveler
The first known use of antihelium was in 1963

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

  1. Expanded definitions
  2. Detailed etymologies
  3. Advanced search tools
  4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now

Dictionary Entries Near antihelium

Cite this Entry

“Antihelium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/antihelium. Accessed 17 Dec. 2024.

Love words? Need even more definitions?

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