subatomic

adjective

sub·​atom·​ic ˌsəb-ə-ˈtä-mik How to pronounce subatomic (audio)
1
: of or relating to the inside of the atom
2
: of, relating to, or being particles smaller than atoms

Examples of subatomic in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Light Galore Our current understanding of the early universe’s development goes something like this: After the Big Bang, 13.8 billion years ago, the cosmos expanded and the primordial soup of subatomic particles cooled. The Editors, JSTOR Daily, 30 Jan. 2025 For example, the subatomic particles known as quarks are really good at binding together. Paul Sutter, Ars Technica, 14 Jan. 2025 Quantum computing uses subatomic particles that can be both simultaneously. Ben Berkowitz, Axios, 8 Jan. 2025 This has since become an inseparable part of research into these particles and the most advanced levels of subatomic research. Ken Bridges, Austin American-Statesman, 31 Dec. 2024 See all Example Sentences for subatomic 

Word History

First Known Use

1874, in the meaning defined at sense 1

Time Traveler
The first known use of subatomic was in 1874

Dictionary Entries Near subatomic

Cite this Entry

“Subatomic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/subatomic. Accessed 11 Feb. 2025.

Medical Definition

subatomic

adjective
sub·​atom·​ic ˌsəb-ə-ˈtäm-ik How to pronounce subatomic (audio)
1
: of or relating to the inside of the atom
2
: of, relating to, or being particles smaller than atoms
Last Updated: - Updated example sentences
Love words? Need even more definitions?

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