noun
division
dih-VIZH-uhn/dɪˈvɪʒn/
Separation into distinct parts or groups.
The loaf's division into four quarters leaves clean gaps between the pieces.

Etymology
From dividere, division names the act of separating something into portions or shares. It also came to name a separated portion, linking the action with its result.
In context
is because some of these actual divisions are going to combine together and form special chords and that's why we're mentioning so again the upper trunk splits into an anterior division a posterior division
More examples
- The division of the class into small groups encourages discussion.
- A curtain creates a division between the sleeping and living areas.
- The debate reveals deep divisions within the community.
Forms
division · divisions
divide verb — To separate something into distinct parts.
Similar words
- separation
- Emphasizes keeping things apart rather than forming distinct groups.
- partition
- Usually means splitting a space or whole into sections.
- split
- Often suggests a sharp break or separation into opposing sides.