Encyclopediafluidfluid, any substance that is able to flow. Of the four states of matter, only a solid is not a fluid, since it has a definite shape that is not readily changed. Any liquid, gas, or plasma is classed as a fluid. The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2007, Columbia University Press. All rights reserved. More on fluid from Fact Monster:
- synovial fluid - synovial fluid: synovial fluid: see joint.
- friction: The Nature of Fluid Friction - The Nature of Fluid Friction Fluid friction is observed in the flow of liquids and gases. Its ...
- pressure: Pressure of Fluids - Pressure of Fluids A fluid exerts a pressure on all bodies immersed in it. For a fluid at rest the ...
- joint, in anatomy - joint joint, in anatomy, juncture between two bones. Some joints are immovable, e.g., those that ...
- Cell Theory, Form, and Function: Fluid Mosaic Model of Membrane Structure and Function - Cell Theory, Form, and Function Fluid Mosaic Model of Membrane Structure and Function Cell Theory, ...
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