A line on a graph or chart, such as a weather map, along which all the points have the same temperature.

(physics) (Of a thermodynamic process) during which the temperature remains constant. / (meteorology) Of equal or constant temperature with respect to space, volume, or pressure.

Of or pertaining to a process that takes place at constant temperature / Of or pertaining to an isotherm

(geography) An isotherm

plural of isothermal

plural of isotherm

In an isothermal manner; at constant temperature

The condition of being isothermal.

plural of isothermality

In an isothermic manner.