Look up nucleus in Wiktionary, the free dictionary.

Nucleus may refer to: Wikipedia does not have an article with this exact name. ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 151 languages. ...

In physics

• Atomic nucleus, the collection of protons and neutrons in the center of an atom, also composed of subatomic matter
• Ice nucleus, the center of an ice crystal
• Cloud condensation nuclei, the basis for the development of a cloud droplet

The nucleus of an atom is the very small dense region, of positive charge, in its centre consisting of nucleons (protons and neutrons). ... An ice nucleus is a particle which acts as the nucleus for the formation of an ice crystal in the atmosphere. ... Aerosol pollution over Northern India and Bangladesh - NASA Cloud condensation nuclei or CCNs (also known as cloud seeds) are small particles (typically 0. ...

In biology

• Cell nucleus, the control center of a cell, which contains the cell's chromosomal DNA
• Nucleus (neuroanatomy), a central nervous system structure composed mainly of gray matter

HeLa cells stained for DNA with the Blue Hoechst dye. ... In neuroanatomy, a nucleus is a central nervous system structure that is composed mainly of gray matter, and which acts as a hub or transit point for electrical signals in a single neural subsystem. ...

In astronomy

• Comet nucleus, the solid core of a comet.
• Galaxy nucleus, the central region of a galaxy.

The solid, central part of a comet is known as the comet nucleus. ... The nucleus of a galaxy is a large feature, most easily observed in spiral galaxies. ...

In phonology

• Syllable nucleus, the central part of a syllable
• Sentence nucleus, the syllable which receives the greatest stress in a word

In phonetics and phonology, the nucleus is the central part of the syllable, mostly commonly a vowel. ...

In computer systems

• Nucleus CMS, an open-source weblog system
• Nucleus RTOS, a brand of operating system

// Over view Nucleus CMS is an open-source content management system written in PHP, with a MySQL backend, primarily written and maintained by Wouter Demuynck. ... Nucleus RTOS is a real-time operating system (RTOS) and full featured toolset created by Accelerated Technology, the Embedded Systems Division of Mentor Graphics for various CPU platforms. ...

Other

• Nucleus (band), a British jazz-rock band led by Ian Carr
• Nucleus (video game), a downloadable game on the PlayStation Store
• Nucleus Limited, an Australian medical research company, taken over by Pacific Dunlop in 1988.

Nucleus were a pioneering British jazz-rock band that continued in different incarnations from 1969-85. ... Nucleus is a downloadable game on the PlayStation Store. ... Nucleus Limited began as a private company, Nucleus Holdings Pty Ltd, Sydney Australia, in 1967, founded by former Watson-Victor executive Paul Murray Trainor, after aquistion of X-ray sales & service company Scientific & General. ...

See also

• All pages beginning with Nucleus
• Nucleolus
• Nuclear
• Nucleation
• All pages beginning with Nucleo
• Nucleic acid

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