The meaning of FLUID is having particles that easily move and change their relative position without a separation of the mass and that easily yield to pressure : capable of flowing.
FLUID definition: 1. a substance that flows and is not solid: 2. smooth and continuous: 3. If situations, ideas, or…. Learn more.
A fluid in medicine or biology refers to any liquid constituent of the body (body fluid), [6][7] whereas "liquid" is not used in this sense. Sometimes liquids given for fluid replacement, either by drinking or by injection, are also called fluids [8] (e.g. "drink plenty of fluids").
Most fluids are liquids or gases. Examples include air and water. A fluid is a material that flows or continuously deforms under a shear (tangential stress). In other words, a fluid has zero shear modulus. Liquids, gases, and plasma are fluids. However, some solids behave as fluids as well.
FLUID definition: a substance, as a liquid or gas, that is capable of flowing and that changes its shape at a steady rate when acted upon by a force tending to change its shape. See examples of fluid used in a sentence.
Fluid, any liquid or gas or generally any material that cannot sustain a tangential, or shearing, force when at rest and that undergoes a continuous change in shape when subjected to such a stress. A characteristic property of fluids is flow. Learn more about fluids, including various models.
A fluid is any substance that flows and continuously changes shape when a force is applied to it. Unlike a solid, which holds its shape under pressure, a fluid keeps moving for as long as the force acts on it. Water, air, honey, and even the plasma inside stars all qualify as fluids.