GIS Dictionary

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child replica

[ESRI software] In geodatabase editing, data that has been copied to a destination geodatabase during the replication process.

chord

A straight line that joins two points on a curve.

choropleth map

[cartography] A thematic map in which areas are distinctly colored or shaded to represent classed values of a particular phenomenon.

chroma

The saturation, purity, or intensity of a color.

CHUM

[navigation] Acronym for Chart Updating Manual. A document containing updates to aeronautical information, used by the U.S. military to update

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