Adjective
(physics) Smaller than or occurring in an atomic nucleus.
(biology) Smaller than or occurring in a cell nucleus.
Source: en.wiktionary.orgGlashow, who coproposed charm quark with Bjorken, is quoted as saying, "We called our construct the 'charmed quark', for we were fascinated and pleased by the symmetry it brought to the subnuclear world." Source: Internet
Other subnuclear bodies Besides the nucleolus, the nucleus contains a number of other non-membrane-delineated bodies. Source: Internet
Other subnuclear structures appear as part of abnormal disease processes. Source: Internet