The amount of solute required to form a saturated solution in a particular solvent is called the solubility of that solute in that solvent.

Here's a breakdown:

* Solute: The substance that dissolves in a solvent.

* Solvent: The substance that dissolves the solute.

* Saturated solution: A solution where the maximum amount of solute has dissolved at a given temperature and pressure. Any additional solute will not dissolve.

So, solubility is the maximum amount of solute that can dissolve in a given amount of solvent at a specific temperature and pressure to form a saturated solution.