👉 A strong fluid, often used interchangeably with supercritical fluid, is a state of matter that exhibits properties of both liquids and gases but is unique in its behavior. When a substance is subjected to extremely high temperatures and pressures, it can transition into a supercritical state where it no longer adheres to the distinct phases of liquid and gas. In this state, the fluid has the density and solvating power of a liquid but spreads out like a gas, allowing it to penetrate porous materials more effectively and dissolve substances with greater efficiency. This makes strong fluids particularly useful in applications like extraction processes, chemical reactions, and environmental remediation, where their unique properties can enhance performance and efficiency beyond what traditional liquids or gases can achieve.