noun
cell; small organizational unit
Refers to a small, often covert or semi-autonomous group within a larger organization, especially in political or activist contexts.
その秘密組織はいくつかのフラクションに分かれていた。
The secret organization was divided into several cells.
noun
faction; splinter group
Commonly used for subgroups within political parties, often with distinct agendas or leadership.
Factions within the party are clashing over policy.
noun
Chemistry term for a component separated by distillation or similar processes; see also 留分.
See also: 留分
このフラクションには目的の化合物が含まれている。
This fraction contains the target compound.