The nucleus (plural nuclei) is the central part of theatom; it contains the protons and neutrons. Mass, Volume and Density Nearly all of the atom's mass is contained in the nucleus; the volume of the nucleus is tiny compared with the atom's total volume; thus the density of matter in...
1. A central or essential part around which other parts are gathered or grouped; a core: the nucleus of a city. 2. Something regarded as a basis for future development and growth; a kernel: a few paintings that formed the nucleus of a great art collection. 3. Biology A membrane-bound...
cell nucleus- a part of the cell containing DNA and RNA and responsible for growth and reproduction karyon,nucleus cell- (biology) the basic structural and functional unit of all organisms; they may exist as independent units of life (as in monads) or may form colonies or tissues as in hig...
The meaning of NUCLEUS is the small bright body in the head of a comet. How to use nucleus in a sentence.
Traveling in orbit around it is a cloud of negatively charged particles called electrons. The number of protons in the atomic nucleus gives a substance its identity as a particular element. Called also atomic nucleus. adj., adj nu´clear. The nucleus and nucleolus of a cell. From Mahon ...
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Energy, in physics, the capacity for doing work. It may exist in potential, kinetic, thermal, electrical, chemical, nuclear, or various other forms. There are, moreover, heat and work—i.e., energy in the process of transfer from one body to another. Lea
Declaration of Independence, document approved by the Continental Congress on July 4, 1776, that announced the separation of 13 North American British colonies from Great Britain. On July 2 the Congress had resolved that ‘these United Colonies are, and
nucleusbasisof aneducationalwebsite.•MeadowMillnowforms the nucleusof a small tradingestate.•Hickson hopes this willform the nucleusof aself-helpgroup.•In the beginning of thechapterhe calls the 12 disciples who willform the nucleusof theChurch....
Phonetics.the final segment of a syllable beginning with the vowel and including any following consonants; the nucleus plus the coda.Compareonset(def3). the muscles of the torso, which provide support for the spine and pelvis: Building a strong core can help with posture and flexibility and ca...