What term is used to describe a cell in an isotonic environment?

In an isotonic environment, a cell experiences an equal concentration of dissolved molecules (or solutes) inside and outside its membrane. This equilibrium means that there is no net movement of water into or out of the cell, leading to stable cell volume and ideal conditions for cellular function. The term "isotonic" specifically refers to the balance in solute concentrations, which is crucial for maintaining homeostasis in biological systems. Thus, when a cell is in an isotonic environment, it maintains its shape and integrity without significant changes in its internal environment. This contrasts with environments that are hypertonic or hypotonic, which would lead to either loss or gain of water, respectively, affecting cellular health.