adj.

of or relating to constituents of the atom or forces within the atom

"subatomic particles"; "harnessing subatomic energy"

of dimensions smaller than atomic dimensions

Subatomic movements of a domain wall in the Peierls potential
Intensity interferometry in subatomic physics
Atomic and Subatomic Decompositions in Anisotropic Function Spaces
Refinement of proteins at subatomic resolution with MOPRO
Experiments with an isolated subatomic particle at rest
Subatomic Features on the Silicon (111)-(7 x 7) Surface Observed by Atomic Force Microscopy
Heterodyne interferometer with subatomic periodic nonlinearity.
Experiments with an Isolated Subatomic Particle at Rest (Nobel Lecture)
Events in the Semantics of English: A Study in Subatomic Semantics
Experimental and Theoretical Charge Density Studies at Subatomic Resolution