Nucleus

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:

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