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polyconic projection

noun

, Cartography.
  1. a conic projection in which the parallels are arcs of circles that are not concentric but are equally spaced along the central straight meridian, all other meridians being curves equally spaced along the parallels.


polyconic projection

/ ˌpɒlɪˈkɒnɪk /

noun

  1. a type of conic projection in which the parallels are not concentric and all meridians except the central one are curved lines. It is neither equal-area nor conformal, but is suitable for maps of areas or countries of great longitudinal extent
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


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Word History and Origins

Origin of polyconic projection1

First recorded in 1900–05
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Example Sentences

The polyconic projection (see fig. 5) is used for most Government maps.

The polyconic projection is not used for very extensive areas of the earth's surface, as for instance a hemisphere.

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