1. Lines on a map or chart connecting points of equal volume, especially in thermodynamics or meteorology.
Usage: technical; plural form of isochore
2. In thermodynamics, curves representing processes that occur at constant volume.
Usage: physics; plural form of isochore

Examples

• The meteorologist studied isochores to identify regions of equal air density.
• On the thermodynamic diagram, isochores are represented as straight lines for ideal gases.
• Isochores help engineers analyze constant-volume heating and cooling processes.
• The chart displayed multiple isochores indicating different volume levels across the pressure-temperature plane.