👉 A fluid, in this context, refers to a substance that can flow and change shape without breaking apart, often exhibiting properties of both liquids and gases. It has a relatively low viscosity, allowing it to move easily and fill spaces. Examples include water, oil, and air, which can flow smoothly and adapt to their surroundings while maintaining a cohesive structure. Fluids are characterized by their ability to take the shape of their container, demonstrating both liquidity and compressibility under certain conditions.
