noun
- a line on a map or chart connecting points of equal value for a particular variable (such as temperature, pressure, or rainfall).
Usage: technical; used in meteorology, geography, and cartography
Examples
- Meteorologists use isopleths to show temperature patterns across a region.
- The weather map displayed isopleths of equal atmospheric pressure.
- An isopleth connecting all points with the same annual rainfall helps identify climate zones.
- The geographer drew isopleths on the map to represent elevation changes.
- Isopleths of equal humidity are useful for understanding moisture distribution in the atmosphere.