People or things that divide something into smaller parts or sections.
Subdividers are usually helpful because they make things easier to understand or manage.
Examples:
The workers are the subdividers of the land.
The ruler and pencil are the subdividers of the paper.
The teacher is the subdividers of the students into groups.
The knife is the subdividers of the cake.
The computer program is the subdividers of the information.
The sun is the subdividers of the day into morning and night.