Definition of Nucleus. Meaning of Nucleus. Synonyms of Nucleus

Here you will find one or more explanations in English for the word Nucleus. Also in the bottom left of the page several parts of wikipedia pages related to the word Nucleus and, of course, Nucleus synonyms and on the right images related to the word Nucleus.

Definition of Nucleus

Nucleus
Nucleus Nu"cle*us, n.; pl. E. Nucleuses, L. Nuclei. [L., a kernel, dim. fr. nux, nucis, nut. Cf. Newel post.] 1. A kernel; hence, a central mass or point about which matter is gathered, or to which accretion is made; the central or material portion; -- used both literally and figuratively. It must contain within itself a nucleus of truth. --I. Taylor. 2. (Astron.) The body or the head of a comet. 3. (Bot.) (a) An incipient ovule of soft cellular tissue. (b) A whole seed, as contained within the seed coats. 4. (Biol.) A body, usually spheroidal, in a cell or a protozoan, distinguished from the surrounding protoplasm by a difference in refrangibility and in behavior towards chemical reagents. It is more or less protoplasmic, and consists of a clear fluid (achromatin) through which extends a network of fibers (chromatin) in which may be suspended a second rounded body, the nucleolus (see Nucleoplasm). See Cell division, under Division.

Meaning of Nucleus from wikipedia

- Look up nucleus in Wiktionary, the free dictionary. Nucleus (pl.: nuclei) is a Latin word for the seed inside a fruit. It most often refers to: Atomic...
- The atomic nucleus is the small, dense region consisting of protons and neutrons at the center of an atom, discovered in 1911 by Ernest Rutherford based...
- The cell nucleus (from Latin nucleus or nuculeus 'kernel, seed'; pl.: nuclei) is a membrane-bound organelle found in eukaryotic cells. Eukaryotic cells...
- The hypoglossal nucleus is a cranial nerve nucleus, found within the medulla. Being a motor nucleus, it is close to the midline. In the open medulla,...
- The nucleus ac****bens (NAc or NAcc; also known as the ac****bens nucleus, or formerly as the nucleus ac****bens septi, Latin for 'nucleus adjacent to the...
- The intermediolateral nucleus (IML) is located in Rexed lamina VII of the lateral grey column, one of three grey matter columns found in the spinal cord...
- Geniculate nucleus may refer to two structures in the brain: Lateral geniculate nucleus, in visual perception Medial geniculate nucleus, in hearing Geniculate...
- The nucleus ambiguus ("ambiguous nucleus" in English) is a group of large motor neurons, situated deep in the medullary part of the reticular formation...
- The subthalamic nucleus (STN) is a small lens-shaped nucleus in the brain where it is, from a functional point of view, part of the basal ganglia system...
- The lentiform nucleus (or lentiform complex, lenticular nucleus, or lenticular complex) are the ****men (laterally) and the globus pallidus (medially)...