Pronunciation

/ˈnjuːklɪəs/

Definitions

• Noun (n): The central part of an atom that contains protons and neutrons, around which electrons orbit. It’s the core of an atom where most of its mass is concentrated. For example: “The nucleus of an atom is made up of protons and neutrons.”
• Noun (n): In biology, it refers to the central part of a cell that contains most of the genetic material. For example: “The nucleus controls many of the functions of the cell by regulating gene expression.”

Example Sentences

• Atomic Nucleus: “Understanding the structure of the nucleus is crucial to nuclear physics.”
• Cell Nucleus: “In eukaryotic cells, the nucleus houses the DNA within a double membrane structure called the nuclear envelope.”

Phrases

• “Nuclear family”: A social unit consisting of two parents and their children, often considered the basic unit in society, with the parents acting as the nucleus around which the family revolves.
• “Nucleus accumbens”: A region in the basal forebrain that plays a significant role in reward, pleasure, and addiction; often referred to in neuroscience.

Synonyms

• Core
• Center
• Heart
• Hub (in the context of a group or system)
• Kernel (metaphorical use, referring to the essence or central part)

Note: The term “nucleus” does not have other parts of speech aside from being a noun in standard usage. However, metaphorically, one might use it as such: “He became the nucleus of the team, holding everyone together.” But this still retains its noun sense.