Definitions

1. noun

a line or curve on a graph showing the relationship between temperature and a physical property or process at a constant temperature

“The researcher studied the isotherm of the chemical reaction to understand its behavior.”

2. noun

a line or curve on a graph showing the relationship between the amount of a substance and its equilibrium pressure at a constant temperature

“The isotherm of the gas molecule showed its pressure and volume relationship at different temperatures.”

3. noun

a line or curve on a graph showing the relationship between temperature and the solubility of a substance at a constant temperature

“The isotherm of the sugar showed its solubility in water at different temperatures.”