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Nucleuses: meaning, definitions and examples

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nucleuses

 

[ˈnjuːklɪəsɪz ]

Definitions

Context #1 | Noun

cell biology

The nucleus is a membrane-bound organelle found in eukaryotic cells that contains the cell's genetic material. It controls the cell's growth, metabolism, and reproduction, acting as the command center. In multicellular organisms, each nucleus coordinates the functions of the numerous cells in the organism.

Synonyms

cell nucleus, nucleolus.

Examples of usage

  • The nucleus is essential for cell division.
  • Genetic material is stored in the nucleus.
  • Damage to the nucleus can affect cell function.
Context #2 | Noun

astronomy

In astronomy, a nucleus refers to the central part of a comet, consisting of ice, dust, and rocky material. It is often surrounded by a coma and tail when the comet approaches the Sun. The nucleus is responsible for the comet's activity and its formation of a tail.

Synonyms

center, core.

Examples of usage

  • The nucleus of the comet is composed mainly of ice.
  • As the comet approaches the sun, the nucleus sublimates.
  • Scientists study the nucleus to understand comet behavior.

Interesting Facts

Etymology

  • Derived from the Latin word 'nucleus,' which means 'kernel' or 'core,' indicating its central importance.
  • The term has been used in scientific contexts since the early 19th century, initially referring to the central part of cells.

Science

  • In cells, the nucleus holds genetic material, which is essential for growth and function.
  • Nuclei are surrounded by a membrane called the nuclear envelope that protects the DNA inside.
  • In physics, 'nucleus' refers to the center of an atom, containing protons and neutrons.
  • Bacterial cells generally do not have nuclei; instead, their genetic material is found in a nucleoid region.

Literature

  • In literature and storytelling, the concept of a 'nucleus' can symbolize the main idea or theme around which a narrative revolves.
  • Famous authors have used the metaphor of a nucleus to describe the essence of character development or plot structures.

Pop Culture

  • In the world of video games, 'nucleus' sometimes refers to powerful central elements that drive the game's mechanics.
  • Nucleus has been featured in science fiction works, often symbolizing advanced technology or bioengineering.

History

  • The discovery of the cell nucleus was a significant milestone in biology, contributing to the development of cell theory in the 19th century.
  • Researchers like Robert Brown discovered the nucleus in plant cells, leading to deeper investigations into cellular structure.

Word Frequency Rank

With rank #42,840, this word is among the least frequently used in common English. Understanding it can be beneficial for comprehensive language mastery, but it's not essential for most learners.