subatomic

From sub- +‎ atomic.

• (Received Pronunciation) IPA^(key): /ˌsʌbəˈtɒmɪk/
• (General American) IPA^(key): /ˌsʌbəˈtɑːmɪk/
• Rhymes: -ɒmɪk

subatomic (not comparable)

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 something that is smaller in scale than the diameter of a hydrogen atom.

   The electron microscope is able to resolve detail at the subatomic level.

• atomic
• subatomically
• subatomic particle

Borrowed from French subatomique.

subatomic m or n (feminine singular subatomică, masculine plural subatomici, feminine and neuter plural subatomice)

1. subatomic