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Added 9 October 2026

isopleth

noun

noun Definition from Wiktionary (CC BY-SA). More about isopleth at Wordnik → Where our words come from →

A line drawn on a map through all points having the same value of some measurable quantity.
A line in a phase diagram indicating the same mole fraction.

Origin

From iso- + Ancient Greek πλῆθος (plêthos, “a great number”).

From Wiktionary, via Kaikki.org (CC BY-SA)

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