subdivision

(noun) an area composed of subdivided lots.

(noun) the act of subdividing; division of something previously divided.

(noun) a division of some larger or more complex organization. Synonyms: branch, arm. Examples: "A branch of congress." "Botany is a branch of biology." "The germanic branch of indo-european languages."

(noun) a self-contained part of a larger composition (written or musical). Synonyms: section. Examples: "He always turns first to the business section." "The history of this work is discussed in the next section."

(noun) a section of a section; a part of a part; i.e., a part of something already divided. Synonyms: subsection.