From Encyclopedia Jr, free information reference for Kids
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
- 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
