Nucleus

/ˈnjuː.klɪ.əs/

Meaning & Definition

noun

The central and most important part of an object, movement, or group, forming the basis for its activity and growth.

At the nucleus of the debate was the issue of climate change and its impacts.

In biology, the membrane-bound structure in a cell that contains the genetic material.

The cell nucleus regulates gene expression and mediates the replication of DNA.

In physics, a stable or unstable combination of protons and neutrons forming the core of an atom.

The nucleus of an atom is composed of protons and neutrons, while electrons orbit around it.

A group of cells in the brain with a specific function.

The nucleus accumbens is associated with the brain's reward circuitry.

A core or central part of a larger structure.

The nucleus of the organization was formed by a team of dedicated volunteers.

Latin, from 'nucleus' meaning 'kernel, innermost part'

cell nucleus:

The membrane-bound structure that contains the genetic material in a cell.

nucleus of a group:

The central and most important members of a group.

galactic nucleus:

The center of a galaxy, often containing a supermassive black hole.

The core or essential part of something, often used in a casual context.

When things get tough, the nucleus of our team really comes through.

A central figure or influential person in a group or organization.

He's the nucleus of the startup, driving all the major decisions.