nuclearly
/ˈnjuːklɪəli/adverb
1As regards or by means of atomic nuclei or their fission or fusion.
2With or in relation to nuclear weapons; especially in nuclearly armed.
3 Biology. In or into a cell nucleus; as regards or by means of the cell nucleus.
4 Linguistics. As or in a nucleus; in relation to a nucleus.
5 Sociology. In relation to or in the manner of a nuclear family.
Origin
1920s (in an earlier sense). From nuclear + -ly.