adjective. Of, relating to, or indicating equal or constant temperatures.

adjective. Of or designating changes of pressure and volume at constant temperature.

adjective. Of or relating to an isotherm.

noun. An isotherm.

Of the same degree of heat; of the same temperature; in physical geography, pertaining to or marking equality of temperature; exhibiting the geographical distribution of temperature: as, an isothermal line; the isothermal relations of different continents; an isothermal chart. Also isothermous.

noun. An isothermal line; an isotherm.

In crystallography, applied to the lines on a crystal face, or more generally to the surfaces in a crystal, which measure the rate of heat-conductivity, these lines or surfaces being characterized by equal degrees of temperature when heat is applied at a certain point.

noun. In thermodynamics, a line or curve determined by the equation of state (pv = RT) of a system, when T has any constant value; a line of equal temperatures.

noun. In spectrophotometry, a curve showing the distribution of intensities in the spectrum of a source of light maintained at constant temperature. Also called isotherm.

adjective. Relating to equality of temperature, or an isotherm.

adjective. Having reference to the geographical distribution of temperature, as exhibited by means of isotherms

adjective. A line drawn on a diagram of energy such that its ordinates represent the pressures of a substance corresponding to various volumes, while the absolute temperature is maintained at a constant value.

adjective. spaces on opposite sides of the equator having the same mean temperature, and bounded by corresponding isothermal lines.

adjective. Of or pertaining to a process that takes place at constant temperature

adjective. Of or pertaining to an isotherm

noun. An isotherm

adjective. of a process or change taking place at constant temperature

"‘isothermal’ is quite of modern invention; but what a long story it would be to tell the meaning of ‘_isothermal_ lines’, all which is summed up in and saved by the word."

isothermal coefficient of compressibility  isothermal combustion  isothermal coördinates  isothermal line  isothermal surface  

equal  

dermal  endodermal  epidermal  geothermal  hydrothermal  

3d  Keynesian  adiabatic  antiparallel  bilinear