Nucleus
Nucleus usually refers to the center of something, but can mean:
In
science:
*
Atomic nucleus, the collection of protons and neutrons in the center of an atom that carries the bulk of the atom's mass and positive charge
*
Cell nucleus, the membrane-bound subcellular organelle found in eukaryotes, visible via microscopy, which contains, primarily, the cell's chromosomes
*
Nucleus (neuroanatomy), a central nervous system structure composed mainly of gray matter that mediates electrical signaling within a particular subsystem
*
Comet nucleus, the solid core of a comet
*
Galaxy nucleus, the central region of a galaxy
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Ice nucleus, the center of an ice crystal
*
Cloud condensation nuclei, the basis for the development of a cloud droplet
In
linguistics:
*
syllable nucleus, the central part of a syllable
*
sentence nucleus, the syllable which receives the greatest stress in a word
In
computer science:
*
Nucleus CMS, an open-source weblog system
*
Nucleus RTOS, a brand of operating system
In
music:
*
Nucleus (band), a British jazz-rock band led by Ian Carr
"Nucleus" is
New Latin, the
diminutive of the
Latin nux (nut).