핵확산이 · 핵확산을
nuclear proliferation
Example
국제사회는 핵확산을 막기 위해 노력하고 있습니다.
The international community is working to prevent nuclear proliferation.
Word parts
핵 nucleus+확 expand+산 scatter
Literally 'nuclear spreading and scattering'.
Good to know
Pronounced [해콱싼].