partition
n. countablen. a wall, screen, or divider that separates one large area into smaller parts. In computing, it is a separate section of a hard drive that acts like its own disk.
n. a physical barrier or divider used to separate a space into distinct sections. In technical contexts, refers to a logical division of a storage device or a mathematical division of a set into non-overlapping subsets.
The office uses a glass partition to create a private meeting room.
The technician created a new partition on the hard drive to install a second operating system.
The historical partition of the territory led to decades of diplomatic tension as families found themselves separated by a newly established international border.
Recorded c.1430, "division into shares, distinction," from Middle English particioun, from Old French particion (modern partition), from Latin partitio, partitionem (“division, portion”), from partitus, the past participle of partire (“to split (up), part(ition)”).
Often used with 'between' to describe the space being divided or 'of' to describe the object being split.