choropleth map

== English == === Etymology === From Ancient Greek χώρα (khṓra, “location”) + πλῆθος (plêthos, “a great number”) + English map. First proposed in 1938 by American geographer John Kirtland Wright to mean "quantity in area," although maps of the type have been used since the early 19th century. === Pronunciation === (UK) IPA(key): /ˈkɔːɹəˌplɛθ/ === Noun === choropleth map (plural choropleth maps) A thematic map in which the distribution of some property is shown using different colours. Synonyms: choropleth, (misspelling) chloropleth, (misspelling) chloropleth map === See also === area-class isarithmic === References === === Further reading === choropleth map on Wikipedia.Wikipedia