ぶんれつ分裂bunretsu
1.

The process or act of separating into multiple parts or distinct components, often leading to a loss of unity or coherence.

2.

A biological phenomenon in which cells, tissues, or organisms divide into two or more entities, commonly observed in reproduction and growth among single-celled and multicellular organisms.

Example:

党派は二つに分裂した。

かくぶんれつ核分裂kakubunretsu
1.

A process in which a heavy atomic nucleus, such as that of uranium or plutonium, splits into two or more smaller nuclei of nearly equal mass, releasing a significant amount of energy, often utilized in nuclear reactors and atomic bombs.

2.

The interaction of heavy elements' nuclei, resulting in their division when bombarded by neutrons, which not only releases energy but also produces additional neutrons that can trigger further reactions, leading to a chain reaction.

3.

A crucial process in cellular biology where the nucleus divides during cell division to form two daughter nuclei, contributing to the growth and reproduction of cells.

さいぼうぶんれつ細胞分裂saiboubunretsu
1.

The process by which a single cell, known as the mother cell, divides to produce two or more new cells, referred to as daughter cells, through nuclear and cytoplasmic division.

2.

A biological mechanism that enables growth, development, and repair in organisms by allowing a parent cell to replicate and yield smaller cells, which can perform the functions necessary for life.

3.

The fundamental reproductive action of cells, encompassing both the division of genetic material and the cytoplasm, which leads to the formation of new cells that maintain the organism's structure and function.

ないぶぶんれつ内部分裂naibubunretsu
1.

A state characterized by disagreement and conflict within a group, leading to fragmentation and a lack of unity.

2.

The phenomenon where differing opinions or interests among members of an organization cause a breakdown in cohesion and cooperation.

3.

A situation in which factions emerge within a collective, resulting in weakened solidarity and possible dysfunction in achieving shared goals.

4.

The process by which a cohesive entity begins to splinter into smaller, often opposing, segments due to unresolved issues or conflicts.