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A to Z GIS | Explore this related guide, featuring updated terms and graphics and developed in coordination with Esri’s GIS Dictionary team.

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  1. [image processing] An abbreviation of picture element. The smallest unit of information in a digital image or raster map, usually square or rectangular. Often used synonymously with cell.

  2. [remote sensing] In remote sensing, the fundamental unit of data collection; represented as a cell in an array of data values.

  3. [information systems] The smallest element of a display device, such as a video monitor, that can be independently assigned attributes, such as color and intensity.

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