a segment
Definitions
Each of the parts into which something is or may be divided.
A part of a line or other geometric figure bounded by two distinct points.
A portion of an organism or structure that is distinct from others, such as a body part of an arthropod.
Examples
The company decided to focus its marketing efforts on a segment of the population that values sustainability.
A segment of the bridge was closed for emergency repairs after the storm.
Synonyms
a section a part a portion a fragment a slice a division a piece
Antonyms
the whole the entirety the total the complete set the sum the aggregate the entirety of something