Boundary Delimitation: (or districting) the process of drawing electoral districts or voting area boundaries.

District Magnitude: the number of legislative seats assigned to a district.

Redistricting: the periodic delimitation of electoral districts or voting areas for representation purposes.

Electoral District: geographic unit that defines legislative representation (conversion of votes) according to type of electoral system being used.

Voting Areas: (also called polling areas, districts or election precincts) administrative units where all voters within the circumscribed geographic territory are assigned to the same polling place.

Gerrymandering: manipulating the electoral boundaries so as to give undue influence to some party or class; districting or redistricting in a discriminatory manner.

Malapportionment: electoral districts that vary greatly in population

Geographic Information Systems (GIS): technology that is used to view and analyze data from a geographic perspective. This data may exist as maps, 3D virtual models, tables, and/or lists.

Community of Interest: generally thought of as a group of individuals united by shared interests or values.

Boundary Authority: specially designated commission or group that divides a country or region into districts for the election of representatives.

Reapportionment: periodic redrawing of geographic boundaries of electoral districts from which legislative representatives are elected; a primary purpose of early census enumeration