Definition of nucleus

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Nucleus (n.) An incipient ovule of soft cellular tissue.

Lern More About Nucleus

Karyoplasma :: Karyoplasma (n.) The protoplasmic substance of the nucleus of a cell: nucleoplasm; -- in opposition to kytoplasma, the protoplasm of the cell..
Uninucleated :: Uninucleated (a.) Possessed of but a single nucleus; as, a uninucleated cell..
Indogen :: Indogen (n.) A complex, nitrogenous radical, C8H5NO, regarded as the essential nucleus of indigo..
Nucleus :: Nucleus (n.) The body or the head of a comet.
Monera :: Monera (n. pl.) The lowest division of rhizopods, including those which resemble the amoebas, but are destitute of a nucleus..
Phosphoryl :: Phosphoryl (n.) The radical PO, regarded as the typical nucleus of certain compounds..
Trinucleus :: Trinucleus (n.) A genus of Lower Silurian trilobites in which the glabella and cheeks form three rounded elevations on the head.
Nucleated :: Nucleated (a.) Having a nucleus; nucleate; as, nucleated cells..
Nucleus :: Nucleus (n.) The tip, or earliest part, of a univalve or bivalve shell..
Nucleus :: Nucleus (n.) 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..
Carinaria :: Carinaria (n.) A genus of oceanic heteropod Mollusca, having a thin, glassy, bonnet-shaped shell, which covers only the nucleus and gills..
Nucleoidioplasma :: Nucleoidioplasma (n.) Hyaline plasma contained in the nucleus of vegetable cells.
Nucleus :: Nucleus (n.) The central part around which additional growths are added, as of an operculum..
Nucleate :: Nucleate (a.) Having a nucleus; nucleated.
Met- :: Met- () That two replacing radicals, in the benzene nucleus, occupy the relative positions of 1 and 3, 2 and 4, 3 and 5, 4 and 6, 5 and 1, or 6 and 2; as, metacresol, etc. See Ortho-, and Para-..
Tercine :: Tercine (n.) A cellular layer derived from the nucleus of an ovule and surrounding the embryo sac. Cf. Quintine.
Cytococcus :: Cytococcus (n.) The nucleus of the cytula or parent cell.
Cytoblast :: Cytoblast (n.) The nucleus of a cell; the germinal or active spot of a cellule, through or in which cell development takes place..
Cytoplasm :: Cytoplasm (n.) The substance of the body of a cell, as distinguished from the karyoplasma, or substance of the nucleus..
Umbra :: Umbra (n.) The central dark portion, or nucleus, of a sun spot..
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