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Base map

an outline map of an area to which specific information is added for any of various purposes.
Historical Examples

Anyone who attempts to draw a base map must, first of all, know how each feature or part of the map should be represented.
The Preparation of Illustrations for Reports of the United States Geological Survey John L. Ridgway

The application of six of these conventional patterns to a base map is shown in figure 9.
The Preparation of Illustrations for Reports of the United States Geological Survey John L. Ridgway


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    base memory hardware, jargon The lowest 640 kilobytes of memory in an IBM PC-compatible computer running MS-DOS. Other PC operating systems can usually compensate and “ignore” the fact that there is a 640K limit to base memory. This was put in place because the original CPU – the Intel 8088 – could only access one […]

  • Base metal

    any metal other than a precious or noble metal, as copper, lead, zinc, or tin. Compare noble metal, precious metal. the principal metal of an alloy. the principal metal of a piece underlying a coating of another metal; core. Historical Examples He knows it is only base metal, washed over with a thin varnish of […]

  • Base number

    noun a number or quantity which is arbitrarily made the fundamental number of a system; also called base Examples Ten is the base number of the decimal system of numeration. Historical Examples So I suppose it took three times the base number for the third batch? Double or Nothing Jack Sharkey

  • Base of heart

    base of heart base of heart n. The part of the heart formed mainly by the left atrium and to a lesser extent by the posterior part of the right atrium, directed backward and to the right, and separated from the vertebral column by the esophagus and aorta.

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