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Definition of nuclei. Meaning of nuclei. Synonyms of nuclei

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

Definition of nuclei

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 nuclei from wikipedia

- the raphe nuclei (gr****: ῥαφή 'seam') are a moderate-size cluster of nuclei found in the brain stem. their main function is to release serotonin to the" timestamp="2017-01-15t14:44:47z" />