pedesis

Medical Dictionary

pedesis pe·de·sis (pĭ-dē'sĭs)
n. pl. pe·de·ses (-sēz)
See Brownian movement.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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WordNet
pedesis

noun
the random motion of small particles suspended in a gas or liquid [syn: Brownian movement
WordNet® 3.0, © 2006 by Princeton University.
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