SINCE 1828
subnuclear
adjective
sub·nu·cle·ar
| \ ˌsəb-ˈnü-klē-ər
, -ˈnyü-, nonstandard -kyə-lər\
, -ˈnyü-, nonstandard -kyə-lər\
Definition of subnuclear
: of, relating to, or being a particle smaller than the atomic nucleus
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