Dictionary

subatomic

adjective sub·atom·ic \-ə-ˈtä-mik\

: smaller than an atom

: of or relating to the inside of an atom

Full Definition of SUBATOMIC

1
:  of or relating to the inside of the atom
2
:  of, relating to, or being particles smaller than atoms
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First Known Use of SUBATOMIC

1903
Medical Dictionary

subatomic

adjective sub·atom·ic \ˌsəb-ə-ˈtäm-ik\

Medical Definition of SUBATOMIC

1
:  of or relating to the inside of the atom
2
:  of, relating to, or being particles smaller than atoms

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