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 cell nucleus (from Latin nucleus or nuculeus 'kernel, seed'; pl.: nuclei) is a membrane-bound organelle found in eukaryotic cells. Eukaryotic cells...
- 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 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...
- Geniculate nucleus may refer to two structures in the brain: Lateral geniculate nucleus, in visual perception Medial geniculate nucleus, in hearing Geniculate...
- typically defined by linguists as a nucleus (most often a vowel) with optional sounds before or after that nucleus (margins, which are most often consonants)...
- magnocellular neurosecretory cells in the paraventricular nucleus and the supraoptic nucleus of the hypothalamus produce neurohypophysial hormones, oxytocin...
- In neuroanatomy, a nucleus (pl.: nuclei) is a cluster of neurons in the central nervous system, located deep within the cerebral hemispheres and brainstem...
- consisting of both the dorsal striatum (caudate nucleus and ****men) and the ventral striatum (nucleus ac****bens and olfactory tubercle), the globus pallidus...
- The nucleus ambiguus ("ambiguous nucleus" in English) is a group of large motor neurons, situated deep in the medullary part of the reticular formation...