What Is the Definition of a Fluid?

Chemistry Glossary Definition of Fluid

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A fluid is any substance that flows or deforms under applied shear stress. Fluids comprise a subset of the states of matter and include liquids, gases, and plasma.

Examples

All liquids and gases are fluids (air, water, oil).

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Helmenstine, Anne Marie, Ph.D. "What Is the Definition of a Fluid?" ThoughtCo, Aug. 28, 2020, thoughtco.com/definition-of-fluid-604466. Helmenstine, Anne Marie, Ph.D. (2020, August 28). What Is the Definition of a Fluid? Retrieved from https://www.thoughtco.com/definition-of-fluid-604466 Helmenstine, Anne Marie, Ph.D. "What Is the Definition of a Fluid?" ThoughtCo. https://www.thoughtco.com/definition-of-fluid-604466 (accessed September 24, 2021).