-
1(physics) the part of an atom that contains most of its mass and that carries a positive electric charge see neutron, proton
Definitions on the go
Look up any word in the dictionary offline, anytime, anywhere with the Oxford Advanced Learner’s Dictionary app.
- 2(biology) the central part of some cells, containing the genetic material
- 3the central part of something, around which other parts are located or collected These paintings will form the nucleus of a new collection.
Check pronunciation: nucleus