• WordNet 3.6
    • n nucleolus a small round body of protein in a cell nucleus; such organelles contain RNA and are involved in protein synthesis
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Webster's Revised Unabridged Dictionary
    • Nucleolus A little nucleus.
    • Nucleolus (Biol) A small rounded body contained in the nucleus of a cell or a protozoan.
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Century Dictionary and Cyclopedia
    • nucleolus In zoology, the nucleus of a nucleus; one of the rounded deeply staining structures found in the nucleus of a cell. The relation they bear to the nuclear network is still uncertain. Some consider them as distinct from the nuclear network (Flemming); others consider them as merely thickened knots of the network (Klein). The nucleolus of the human ovum was discovered by Wagner in 1836, and hence is sometimes called the spot of Wagner in anatomical text-books. See cut under cell, 5.
    • nucleolus Specifically, in Infusoria, a minute particle attached to the exterior of the nucleus (or “ovary”), supposed to function as a testicle. But since it is the essential characteristic of a nucleolus to be contained within a nucleus, these so-called nucleoli of protozoans are now differently interpreted, and called paranuclei. See paranucleus.
    • nucleolus In botany, a small solid rounded granule or particle in the interior of the nucleus. There may be several nucleoli in each nucleus.
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Webster's Revised Unabridged Dictionary
L., a little nut, dim. of nucleus,


In literature:

Nucleolus, 65, 92, 94.
"The Story of the Living Machine" by H. W. Conn
Nucleolus in the center.
"The People's Common Sense Medical Adviser in Plain English" by R. V. Pierce
This body is called the nucleus of the cell, and the small one within it, the nucleolus.
"Elements of Structural and Systematic Botany" by Douglas Houghton Campbell
Nucleolus: the small portion of matter in the nucleus most readily affected by staining fluids.
"Explanation of Terms Used in Entomology" by John. B. Smith
There is nothing in the resting nucleus of the spermatogonia which would suggest either a nucleolus or an accessory chromosome.
"Studies in Spermatogenesis (Part 1 of 2)" by Nettie Maria Stevens
This nucleus may in its turn contain a nucleolus.
"The Mechanism of Life" by Stéphane Leduc
Possibly the nucleolus is the Supra- and Subconscious element.
"Feminism and Sex-Extinction" by Arabella Kenealy
This nucleus contains a nucleolus.
"Essays In Pastoral Medicine" by Austin ÓMalley
As yet the two natures and functions of the nucleus and nucleolus are by no means cleared up.
"The Contemporary Review, Volume 36, October 1879" by Various
In the centre of each nucleus is a nucleolus.
"The Works of Francis Maitland Balfour, Volume 1" by Francis Maitland Balfour

In science:

In fact, there exists quite a few natural and interesting cooperation rules, see for a tentative study. (g) Computing other cooperative solutions for C-WMMG, say the nucleolus, the kernel, the least core, and various bargaining sets, are also meaningful.
Complementary cooperation, minimal winning coalitions, and power indices
In addition to these checkpoints, mitotic exit is tightly controlled by the release of Cdc14 from nucleolus and the protein numbers are drastically changed by cell division.
Stable stochastic dynamics in yeast cell cycle
Fig.11 describes examples of reaction schemes. Chemical states of Cdc14 are distinguished by its location whether Cdc14 is confined in the nucleolus with X = (inside) or diffuses over cytoplasm with X = utside).
Stable stochastic dynamics in yeast cell cycle