1. Lines on a map connecting points that have the same mean winter temperature.
Usage: plural of isochime; technical term used in climatology and geography

Examples

• Meteorologists use isochimes to visualize winter temperature patterns across regions.
• The isochimes on the climate map showed how temperature varied with latitude and elevation.
• By studying isochimes, geographers can identify zones with similar winter conditions.
• The isochimes revealed that coastal areas had milder winters than inland regions at the same latitude.