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: 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 …

fluid adjective (LIKELY TO CHANGE) If situations, ideas, or plans are fluid, they are not fixed and are likely to change, often repeatedly and unexpectedly:

In physics, a fluid is a liquid, gas, or other material that may continuously move and deform (flow) under an applied shear stress, or external force. [1] They have zero shear modulus, or, in simpler terms, …

Aug 7, 2021 · Learn what a fluid is in physics and other sciences. Get the definition and see examples of fluids in everyday life.

Fluids flow easily and take on the shape of their containers. All liquids and gases are fluids.

fluid adjective (LIKELY TO CHANGE) If situations, ideas, or plans are fluid, they are not fixed and are likely to change, often repeatedly and unexpectedly:

Throughout the years Fluid Handling has been there for me and my customers. From boilers to pumps, engineering, classes, tech support and friendship, Fluid Handling has proven and continues to be a …

A situation that is fluid is unstable and is likely to change often. The situation is extremely fluid and it can be changing from day to day.

Dec 19, 2025 · Fluid: Definition, Science, and Modern Applications Explained A fluid is any substance—such as air, water, or even the money in your account—that can flow and change shape …