Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A presentation of statistical data in geographical distribution on a map.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Generally, a map used to indicate geographically-bound statistical information, typically region-by-region values of a given variable, for example by using different shadings for different ranges of values.
  • n. Specifically, a map-like graph where the relative areas of graph regions are proportional not to the relative areas of the land regions they represent, but rather to another quantitative variable, such as population or gross domestic product.

from the GNU version of the Collaborative International Dictionary of English

  • n. A map showing geographically, by shades or curves, statistics of various kinds; a statistical map.

Etymologies

from The American Heritage® Dictionary of the English Language, 4th Edition

French cartogramme : carte, map (from Old French, card, from Latin charta, carta, paper made from papyrus; see card1) + -gramme, a record (from Late Latin gramma, something written; see -gram).

Examples

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