Supercritical Fluid

Definition

A supercritical fluid is any substance at a temperature and pressure above its critical point, where distinct liquid and gas phases do not exist.

Related terms

Fluid Dynamics: The study of how fluids behave when they're in motion.

Density:

In this context, it refers to how much mass of a substance is contained in a given volume. Supercritical fluids can often have densities similar to liquids.

Solvent Properties: Supercritical fluids often have excellent solvent properties meaning they can dissolve other substances well.