polyconic projection

American  

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.

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polyconic projection British  

/ 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

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Etymology

Origin of polyconic projection

First recorded in 1900–05

Example Sentences

The latter map is much more easily compared with Hearne's original map than one drawn on the polyconic projection in common use at the present time.

From A Journey from Prince of Wales's Fort in Hudson's Bay to the Northern Ocean in the Years 1769, 1770, 1771, 1772 New Edition with Introduction, Notes, and Illustrations by Tyrrell, J. B.