Definition of nucleus

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Nucleus (n.) The central part around which additional growths are added, as of an operculum..

Lern More About Nucleus

Nucleuses :: Nucleuses (pl. ) of Nucleu.
Janizary :: "Janizary (n.) A soldier of a privileged military class, which formed the nucleus of the Turkish infantry, but was suppressed in 1826..
Nucleoplasm :: Nucleoplasm (n.) The matter composing the nucleus of a cell; the protoplasm of the nucleus; karyoplasma.
Karyomiton :: Karyomiton (n.) The reticular network of fine fibers, of which the nucleus of a cell is in part composed; -- in opposition to kytomiton, or the network in the body of the cell..
Nucleus :: Nucleus (n.) The central part around which additional growths are added, as of an operculum..
Nucleus :: Nucleus (n.) A whole seed, as contained within the seed coats..
Perinuclear :: Perinuclear (a.) Of or pertaining to a nucleus; situated around a nucleus; as, the perinuclear protoplasm..
Intranuclear :: Intranuclear (a.) Within the nucleus of a cell; as. the intranuclear network of fibrils, seen in the first stages of karyokinesis..
Gymnocyte :: Gymnocyte (n.) A cytode without a proper cell wall, but with a nucleus..
Nucellus :: Nucellus (n.) See Nucleus, 3 (a)..
Thiophthene :: Thiophthene (n.) A double thiophene nucleus, C6H4S2, analogous to thionaphthene, and the base of a large series of compounds..
Nucleate :: Nucleate (a.) Having a nucleus; nucleated.
Blastide :: Blastide (n.) A small, clear space in the segments of the ovum, the precursor of the nucleus..
Nucleolus :: Nucleolus (n.) A little nucleus.
Pyridine :: Pyridine (n.) A nitrogenous base, C5H5N, obtained from the distillation of bone oil or coal tar, and by the decomposition of certain alkaloids, as a colorless liquid with a peculiar pungent odor. It is the nucleus of a large number of organic substances, among which several vegetable alkaloids, as nicotine and certain of the ptomaines, may be mentioned. See Lutidine..
Pronucleus :: Pronucleus (n.) One of the two bodies or nuclei (called male and female pronuclei) which unite to form the first segmentation nucleus of an impregnated ovum.
Comet :: Comet (n.) A member of the solar system which usually moves in an elongated orbit, approaching very near to the sun in its perihelion, and receding to a very great distance from it at its aphelion. A comet commonly consists of three parts: the nucleus, the envelope, or coma, and the tail; but one or more of these parts is frequently wanting. See Illustration in Appendix..
Nucleus :: Nucleus (n.) 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..
Tercine :: Tercine (n.) A cellular layer derived from the nucleus of an ovule and surrounding the embryo sac. Cf. Quintine.
Coma :: Coma (n.) The envelope of a comet; a nebulous covering, which surrounds the nucleus or body of a comet..
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