Nucleus (: nuclei) is a Latin word for the seed inside a fruit. It most often refers to:

  • Atomic nucleus, the very dense central region of an atom
  • Cell nucleus, a central organelle of a eukaryotic cell, containing most of the cell's DNA

Nucleus may also refer to:

Science, technology, and mathematics

Astronomy

  • Active galactic nucleus in astronomy
  • Comet nucleus, the solid, central part of a comet

Biology

  • Cell nucleus, a central organelle of a eukaryotic cell, containing most of the cell's DNA
  • Nucleus (neuroanatomy), a cluster of cell bodies of neurons in the central nervous system
  • Nucleus that forms in the eye in nuclear sclerosis (early cataracts)
  • Nucleus, a scientific journal concerned with the cell nucleus; published by Taylor & Francis
  • Nucleus, a small colony of honeybees, induced to raise a new queen by the beekeeper

Computer systems

  • Nucleus (operating system), sometimes a synonym for kernel
  • Nucleus CMS, a weblog system
  • Nucleus RTOS, a real-time operating system (RTOS)
  • Nucleus, part of an operating system loaded by an Initial Program Load or boot loader

Mathematics

  • Nucleus (algebra), the elements of a ring that associate with all others
  • Nucleus (order theory), a mathematical term

Other sciences

  • Nucleus (syllable), in linguistics, the central part of a syllable
  • Atomic nucleus, the very dense central region of an atom
  • Condensation nucleus, the seed of a raindrop
  • Ice nucleus, the seed of a snowflake

Arts and media

  • Nucleus (band), a jazz-rock band from Britain
  • Nucleus (video game), a 2007 downloadable game on the PlayStation Store
  • Nucleus (Anekdoten album), 1995
  • Nucleus (Deeds of Flesh album), 2020
  • Nucleus (Sonny Rollins album), 1975
  • Nucleus, predecessor to Canadian rock band A Foot in Coldwater
  • Nucleus, a scientific journal concerned with the cell nucleus; published by Taylor & Francis

Other uses

  • Nucleus (advocacy group), a UK-European political advocacy campaign organisation
  • Nucleus Limited, an Australian medical research company, taken over by Pacific Dunlop in 1988
  • nuCLEus, a proposed 54-story mixed use building in Cleveland, Ohio, US
  • Nucleus, the Nuclear and Caithness Archives, a British national archive

See also

  • Nuclear (disambiguation)
  • Nucleation
  • Nucleic acid
  • Nucleolus
  • Core (disambiguation)