fission

fission nucléaire

Division du noyau d’un atome en parties plus petites, qui libère de l’énergie.

En anglais simple : The splitting of the centre of an atom into smaller parts, releasing energy.

• Fission releases energy.
• The reactor uses nuclear fission to produce heat.
• Neutrons can trigger fission in uranium atoms.

Synonymes : nuclear splitting

Contraires : fusion

Expressions courantes : nuclear fission, fission reactor, fission products

fission, division

Processus par lequel une chose se sépare en deux éléments distincts.

En anglais simple : A process in which one thing divides into two separate things.

• Fission divided the group in two.
• The diagram shows fission into two separate parts.
• Repeated fission produced several independent groups.

Comment l'utiliser : fission into something (The study traced the group’s fission into two smaller communities.)

Synonymes : splitting, division

Contraires : fusion

Expressions courantes : fission into something, social fission

scissiparité, division binaire

Processus par lequel une bactérie se divise pour former deux nouvelles cellules.

En anglais simple : A process in which a bacterium divides to make two new cells.

• These bacteria reproduce by fission.
• Binary fission creates two daughter cells.
• Warm conditions increased the rate of fission in the culture.

Synonymes : cell division

Expressions courantes : binary fission, fission in bacteria

scinder

Faire se diviser un atome, une cellule ou autre chose en parties plus petites.

En anglais simple : To make an atom, cell, or other thing split into smaller parts.

• Neutrons can fission these nuclei.
• The experiment fissioned a small number of atoms.
• They used particles to fission the heavy nuclei.

Synonymes : split, divide

Contraires : fuse

Expressions courantes : fission uranium nuclei, fission an atom

se scinder

Se diviser en parties plus petites, comme un atome ou une cellule.

En anglais simple : To split into smaller parts, as an atom or cell does.

• Some nuclei fission spontaneously.
• The atoms fissioned after absorbing neutrons.
• These cells fission into two daughter cells.

Comment l'utiliser : fission into something (The nucleus can fission into two smaller nuclei.)

Synonymes : split, divide

Contraires : fuse

Expressions courantes : fission spontaneously, fission into something