subatomic

adjective

sub·​atom·​ic ˌsəb-ə-ˈtä-mik 

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

In particle physics, decay refers to the process where unstable subatomic particles transform into two or more lighter, more stable particles. —William Barter, Space.com, 1 Aug. 2025

Quantum Computing’s Emerging Capabilities and Threats Quantum computing works by harnessing the distinctive properties of atoms and subatomic particles. —Chuck Brooks, Forbes.com, 1 Aug. 2025

Neutrinos are virtually massless subatomic particles with no charge. —Jay Kakade july 20, New Atlas, 20 July 2025

The use of subatomic particles to process data could represent a breakthrough that’s unmatched in modern human history, according to analysts at Bank of America, who compared it to the discovery of fire. —Preston Fore, Fortune, 19 July 2025

Word History

First Known Use

1874, in the meaning defined at sense 1

Rhymes for subatomic

• anatomic
• antidromic
• astronomic
• autonomic
• cryptogamic
• diatomic
• economic
• ergonomic
• gastronomic
• monatomic
• psychonomic
• taxonomic

Medical Definition

subatomic

adjective

sub·​atom·​ic ˌsəb-ə-ˈtäm-ik 

1

: of or relating to the inside of the atom

2

: of, relating to, or being particles smaller than atoms