1. Lines on a map connecting points of equal value for a particular variable (such as temperature, pressure, or rainfall).
Usage: Plural of isopleth; Commonly used in meteorology, geography, and cartography

Examples

• The weather map displayed isopleths showing areas of equal temperature across the region.
• Meteorologists use isopleths to visualize pressure patterns and predict storm systems.
• The isopleths on the climate map revealed a gradual increase in annual rainfall from west to east.
• Geographers analyze isopleths to understand the distribution of natural resources.
• The atlas included several maps with isopleths representing different atmospheric variables.