WordReference Random House Unabridged Dictionary of American English © 2026
in•tra•nu•cle•ar
(in′trə no̅o̅′klē ər, -nyo̅o̅′- or, by metathesis, -kyə lər),USA pronunciation adj.
- Cell Biologyexisting or taking place within a nucleus.
- intra- + nuclear 1885–90
- See nuclear.