isopleth

American

[ahy-suh-pleth] / ˈaɪ səˌplɛθ /

noun

a line drawn on a map through all points having the same numerical value, as of a population figure or geographic measurement.

isopleth British

/ ˈaɪsəʊˌplɛθ /

noun

Also called: isogram, isoline. a line on a map connecting places registering the same amount or ratio of some geographical or meteorological phenomenon or phenomena

"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

Etymology

Origin of isopleth

1905–10; < Greek isoplēthḗs equal in number, equivalent to iso- iso- + plêth ( os ) a great number + -ēs adj. suffix

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023