noun, plural nu·cle·i [noo-klee-ahy, nyoo-], /ˈnu kliˌaɪ, ˈnyu-/, nu·cle·us·es.
- the central, most prominent segment in a syllable, consisting of a vowel, diphthong, or vowellike consonant, as the a-sound in cat or the l-sound in bottled; peak.
- the most prominent syllable in an utterance or stress group; tonic syllable.
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Origin of nucleus
OTHER WORDS FROM nucleussub·nu·cle·us, noun, plural sub·nu·cle·i, sub·nu·cle·us·es.
Words nearby nucleus
Example sentences from the Web for nucleus
Having no electric charge, the neutron was the ideal bullet to shoot into an atom, able to penetrate the nucleus and destabilize it.How understanding nature made the atomic bomb inevitable|Tom Siegfried|August 6, 2020|Science News
In an atom, the protons and neutrons hang out in the center, or nucleus.
The familiar protons and neutrons that make up the atomic nucleus are examples of baryons.CERN: Physicists Report the Discovery of Unique New Particle|Harry Cliff|July 15, 2020|Singularity Hub
Those energy-producing organelles are inherited from a mother and have their own DNA, distinct from the genetic information — from both parents — that’s stored in a cell’s nucleus.A bacterial toxin enables the first mitochondrial gene editor|Jack J. Lee|July 13, 2020|Science News
Alternatively, the detector might contain a minute amount of tritium, a radioactive form of hydrogen with two neutrons in its nucleus.An unexpected result from a dark matter experiment may signal new particles|Emily Conover|June 17, 2020|Science News
Deuterium is an isotope of hydrogen containing a proton and neutron in its nucleus, while normal hydrogen has only a proton.
A July 1884 New York Times article called her “the nucleus and center of the whole organization of crime in New York City.”Meet 'The Queen of Thieves' Marm Mandelbaum, New York City's First Mob Boss|J. North Conway|September 7, 2014|DAILY BEAST
To win you have to start winning and these very attractive candidates could help form a nucleus to rebuild the Party.
The Russian people should form the state at the center, “a nucleus around which other peoples are gathered.”Putin’s Dream of Empire Doesn’t Stop at Crimea, Or Even Ukraine|Oleg Shynkarenko|March 23, 2014|DAILY BEAST
To me, the nucleus of Peter Parker is him being left behind by his parents.Marc Webb Takes Us Inside ‘The Amazing Spider-Man 2’ and Discusses His Rise to the A-List|Marlow Stern|March 15, 2014|DAILY BEAST
"It is going to be what they call a nucleus," said Olive, showing a little piece of fancy work.The Captain's Toll-Gate|Frank R. Stockton
Toward the centre of the cell, especially if it has first been treated with iodine, the nucleus may be found.Elements of Structural and Systematic Botany|Douglas Houghton Campbell
He set out with the Cherethites and Pelethites, who were to form the nucleus of the army which he hoped to collect on the way.History of the Jews, Vol. I (of 6)|Heinrich Graetz
Their successors composed the nucleus of the party of Cushing, Everett, and Winthrop in 1860.Expansion and Conflict|William E. Dodd
The nucleus of a branch exhibition was forming itself in Welbeck Street.The Crime Doctor|Ernest William Hornung
British Dictionary definitions for nucleus
noun plural -clei (-klɪˌaɪ) or -cleuses
- the central point of a starch granule
- a rare name for nucellus
Word Origin for nucleus
Medical definitions for nucleus
n. pl. nu•cle•us•es
Scientific definitions for nucleus
Plural nuclei (nōō′klē-ī′)
- The solid central part of a comet, typically several kilometers in diameter and composed of ice, frozen gases, and embedded chunks of rock and dust. It is the permanent part of a comet from which the coma and tail are generated as the comet approaches the Sun. See more at comet.
- See galactic nucleus.
Cultural definitions for nucleus (1 of 2)
plur. nuclei (nooh-klee-eye)
notes for nucleus
Cultural definitions for nucleus (2 of 2)
In biology, the central region of the cell, in which DNA is stored. The nucleus usually appears as a dark spot in the interior of the cell. Primitive cells (such as bacteria and blue-green algae) have no nuclei.