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Fick's law

noun

: a law of chemistry and physics: the rate of diffusion of one material in another is proportional to the negative of the gradient of the concentration of the first material

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“Fick's law.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/Fick%27s%20law. Accessed 29 Nov. 2025.

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