GIS Dictionary

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apogee

In an orbit path, the point at which the object in orbit is farthest from the center of the body […]

APP-6A

[defense] A military symbology specification published by NATO (North Atlantic Treaty Organization). APP-6A is based on MIL-STD-2525A, the predecessor to

appending

[analysisgeoprocessing] Adding features from multiple data sources of the same data type into an existing dataset.

applet

[non-ESRI software] A small program that usually executes from within a Web browser. Applets are compatible with most platforms, and

application server

[software] A computer program that receives user requests through a client application and returns results to the client.

application Web service

[Internet] A Web service that solves a particular problem; for example, a Web service that finds all of the hospitals

arbitrary symbol

[symbology] A symbol that has no visual similarity to the feature it representsfor example, a circle used to represent a

arc

1 [data structures] On a map, a shape defined by a connected series of unique x,y coordinate pairs. An arc

arc-node topology

The data structure in a coverage used to represent linear features and polygon boundaries and to support analysis functions, such

ArcGIS Online

[empty] A web-based system for sharing, finding, and using maps, layers, and services. ArcGIS Online includes a set of basemaps,

ArcGIS Pro

ArcGIS Pro is the main professional desktop GIS application from Esri, built on a 64-bit architecture. It also allows you

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