An example of a nucleus is the center core of an atom.
An example of a nucleus is the fiction department of a book publisher where most of the money is made and which is considered the heart of the publisher's organization.
The nucleus of a city.
The nucleus of a library.
This collection will form the nucleus of a new library.
A few paintings that formed the nucleus of a great art collection.
Origin of nucleus
- Latin nuculeus, nucleus kernel from nucula little nut diminutive of nux nuc- nut
From American Heritage Dictionary of the English Language, 5th Edition
- From Latin nucleus (“kernel, core"), a diminutive of nux (“nut").