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  1. FLUID Definition & Meaning - Merriam-Webster

    1 day ago · 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.

  2. Fluid - Wikipedia

    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, …

  3. Fluid Definition and Examples - Science Notes and Projects

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

  4. FLUID | English meaning - Cambridge Dictionary

    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:

  5. What Is a Fluid? Definition, Types, and Properties

    Mar 7, 2026 · 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 …

  6. Fluid - Simple English Wikipedia, the free encyclopedia

    A fluid is a substance that can move easily and change shape such as water (liquids), or air (gases), or plasmas. They can 'flow'- flow and fluids both come from the same English word roots (Latin: fluere …

  7. Fluid | Definition, Models, Newtonian Fluids, Non-Newtonian Fluids ...

    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 …

  8. FLUID Definition & Meaning | Dictionary.com

    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 …

  9. FLUID definition and meaning | Collins English Dictionary

    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.

  10. Fluid - Definition, Meaning & Synonyms | Vocabulary.com

    A liquid is a fluid — something that flows easily when poured — although gases can also be called fluid. When your doctor told you to drink lots of fluids to help your cold symptoms, she probably meant …