👉 A fluid, in the context of biology and engineering, is a substance that flows easily and moves freely without resistance. It can be a liquid or a gas, but in biological systems, fluids like blood, lymph, and synovial fluid are crucial for transporting nutrients, oxygen, hormones, and waste products throughout the body. In engineering terms, fluids are essential for processes like lubrication, cooling, and power generation, where their ability to flow smoothly and efficiently is paramount. Understanding the properties and behaviors of fluids is fundamental in designing systems that operate effectively under various conditions.
