Subatomic

Pronunciation

• Rhymes: -É’mɪk

Full definition of subatomic

Adjective

1. (physics) Relating to particles that are constituents of the atom, or are smaller than an atom; such as proton, neutron, electron, etc.
2. Relating to any length or mass that is smaller in scale than a the diameter of a hydrogen atom.The electron microscope is able to resolve detail at the subatomic level.

Related terms

• atomic
• subatomically
• subatomic particle