nucleus
核子,核心,核,核心的
Related Words
Definitions
- 1
plural nu·cle·i [noo-klee-ahy, nyoo-], /ˈnu kliˌaɪ, ˈnyu-/, nu·cle·us·es.
- : a central part about which other parts are grouped or gathered; core: A few faithful friends formed the nucleus of the club.
- : Biology. a specialized, usually spherical mass of protoplasm encased in a double membrane, and found in most living eukaryotic cells, directing their growth, metabolism, and reproduction, and functioning in the transmission of genic characters.
- : Physics. the positively charged mass within an atom, composed of neutrons and protons, and possessing most of the mass but occupying only a small fraction of the volume of the atom.
- : Anatomy. a mass of nerve cells in the brain or spinal cord in which nerve fibers form connections.
- : Also called condensation nucleus. Meteorology. a particle upon which condensation of water vapor occurs to form water drops or ice crystals.
- : Chemistry. a fundamental arrangement of atoms, as the benzene ring, that may occur in many compounds by substitution of atoms without a change in structure.
- : Astronomy. the condensed portion of the head of a comet.
- : Phonetics. 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.
Synonyms & Antonyms
Examples
Having no electric charge, the neutron was the ideal bullet to shoot into an atom, able to penetrate the nucleus and destabilize it.
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.
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.
Alternatively, the detector might contain a minute amount of tritium, a radioactive form of hydrogen with two neutrons in its nucleus.
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.”
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.”
To me, the nucleus of Peter Parker is him being left behind by his parents.
Any epithelial cell may be so granular from degenerative changes that the nucleus is obscured.
Each contains one irregular nucleus or several small, rounded nuclei.
Occasionally the nucleus is irregular in shape, "clover-leaf" forms being not infrequent.
Wright's stain gives the nucleus a deep purple color and the cytoplasm a pale robin's-egg blue in typical cells.
Each contains a single round or oval nucleus, often located eccentrically.