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cartogram

[kahr-tuh-gram]
noun
  1. a diagrammatic presentation in highly abstracted or simplified form, commonly of statistical data, on a map base or distorted map base.

Origin of cartogram

From the French word cartogramme, dating back to 1885–90. See carte, -o-, -gram1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
British Dictionary definitions for cartogram

cartogram

noun
  1. a map showing statistical information in diagrammatic form

Word Origin for cartogram

C20: from French cartogramme, from carte map, chart; see -gram
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