👉 A fluid in various disciplines, particularly in physics, chemistry, and biology, refers to a substance that can flow or change shape without breaking into distinct particles. In physics, fluids describe gases and liquids, which exhibit properties like viscosity and compressibility, and their behavior under different conditions such as pressure and temperature. In chemistry, fluids are central to understanding solutions and mixtures, where particles are dispersed uniformly. In biology, biological fluids like blood, saliva, and synovial fluid play crucial roles in transporting nutrients, removing waste, and facilitating cellular processes. The study of fluids encompasses principles like fluid dynamics, thermodynamics, and rheology, making it a fundamental area of interdisciplinary research.
