nucleus
//ˈnjuːkliəs//
Noun
nucleusSingular
nucleiPlural
1
The central and most important part of an object, movement, or group, forming the basis for its activity and growth.
A small group of dedicated volunteers formed the nucleus of the organization.
2
The positively charged central core of an atom, containing protons and neutrons, around which electrons orbit.
The nucleus of an atom contains protons and neutrons.
3
A dense organelle present in most eukaryotic cells, containing the genetic material.
The nucleus contains the cell's DNA.