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.
Relating to particles that are constituents of the atom, or are smaller than an atom; such as proton, neutron, electron, etc
of dimensions smaller than atomic dimensions of or relating to constituents of the atom or forces within the atom; "subatomic particles"; "harnessing subatomic energy
of or relating to constituents of the atom or forces within the atom; "subatomic particles"; "harnessing subatomic energy"
{s} of or pertaining to particles within an atom; of or pertaining to processes occurring within an atom
A subatomic particle is a particle which is part of an atom, for example an electron, a proton, or a neutron. smaller than an atom or existing within an atom