from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Brownian motion

from the GNU version of the Collaborative International Dictionary of English

  • n. Same as Brownian movement, under brownian.

from The Century Dictionary and Cyclopedia

  • n. A name given by Prof. Jevons to the physical phenomenon called the Brownian movement. See

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. the random motion of small particles suspended in a gas or liquid


from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek a leaping.


  • "pedesis" of small particles, a movement of the particles which is observed to take place when clay, iron oxide, or other finely divided insoluble matter is suspended in water, found that the pedetic action was considerably increased by soap and sodium silicate, and suggested that to this action of soap might be attributed much of its cleansing power.

    The Handbook of Soap Manufacture


Log in or sign up to get involved in the conversation. It's quick and easy.