poly conic projection

polyconic projection

noun Cartography.
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.

Origin:
1900–05

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World English Dictionary
polyconic projection (ˌpɒlɪˈkɒnɪk)
 
n
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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