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.

Aug 9, 2025 · Someone who is fluid -- also called gender fluid -- is a person whose gender identity (the gender they identify with most) is not fixed. It can change over time or from day-to-day.

Fluid ... 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]

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:

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

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 …

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

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, 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 …

Liquid is a state of matter with a definite volume but no fixed shape. When resting in a container, liquids typically adapt to the shape of the container. [note 1] Liquids are nearly incompressible, …