👉 A fluid is an object that moves smoothly and continuously through space without breaking apart or creating new parts. It can take the shape of its container, allowing it to flow effortlessly around obstacles and through narrow spaces. Examples include liquids like water or oil, which can adapt their form to fit within any container they occupy. This characteristic makes fluids highly versatile and essential in various natural processes, such as the movement of water in rivers or the circulation of blood in living organisms.