isopleth

isopleth [ahy-suh-pleth] Word Origin noun

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

Origin of isopleth 1905–10; Greek isoplēthḗs equal in number, equivalent to iso- iso- + plêth(os) a great number + -ēs adj. suffixAlso called isarithm. British Dictionary definitions for isopleth isopleth noun

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

Word Origin for isopleth C20: from Greek isoplēthēs equal in number, from iso- + plēthos multitude, great number