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Nucleus
01
noyau
(biology) the part of a cell that contains most of the genetic information
Exemples
The nucleus of a cell contains genetic material in the form of DNA, which regulates cellular activities.
Le noyau d'une cellule contient du matériel génétique sous forme d'ADN, qui régule les activités cellulaires.
The nucleus is surrounded by a double membrane called the nuclear envelope, which controls the passage of materials into and out of the nucleus.
Le noyau est entouré d'une double membrane appelée enveloppe nucléaire, qui contrôle le passage des matériaux vers et depuis le noyau.
02
noyau, cœur
a central or most important group within a larger organization, often responsible for leadership or key decisions
Exemples
The nucleus of the team consisted of senior engineers who led the development process.
Le noyau de l'équipe était constitué d'ingénieurs seniors qui ont dirigé le processus de développement.
The political nucleus of the movement pushed for major reforms in the education system.
Le noyau politique du mouvement a poussé à des réformes majeures dans le système éducatif.
03
the dense, positively charged core of an atom, made up of protons and neutrons and containing most of the atom's mass
Exemples
The nucleus contains nearly all the mass of an atom.
Scientists studied how electrons orbit the atomic nucleus.
04
a distinct cluster of nerve cells within the brain or spinal cord that performs a specific function
Exemples
The hypothalamic nucleus regulates hunger and body temperature.
Damage to the caudate nucleus can affect movement control.
05
the dense central region of the eye's lens, surrounded by the softer cortex
Exemples
The lens nucleus becomes cloudy with age, leading to cataracts.
The surgeon carefully removed the hardened nucleus during the procedure.
06
noyau
the central core of a comet, which is composed of ice, dust, and rocky materials
Exemples
The nucleus of Comet Hale-Bopp is believed to be several kilometers in diameter.
Le noyau de la comète Hale-Bopp serait de plusieurs kilomètres de diamètre.
The nucleus of a comet contains volatile substances that vaporize when the comet approaches the Sun, creating its characteristic tail.
Le noyau d'une comète contient des substances volatiles qui se vaporisent lorsque la comète s'approche du Soleil, créant ainsi sa queue caractéristique.
07
the central sound unit of a syllable, usually formed by a vowel or vowel-like element, around which other sounds cluster
Exemples
In the word " cat, " the vowel /æ/ serves as the syllable 's nucleus.
Every syllable must have a nucleus to be pronounceable.
Arbre Lexical
pronucleus
nucleus
