from The Century Dictionary.

  • noun Pertaining or relating to any person bearing the name of Brown; Brunonian.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Pertaining to Dr. Robert Brown, who first demonstrated (about 1827) the commonness of the motion described below.
  • adjective the peculiar, rapid, vibratory movement exhibited by the microscopic particles of substances when suspended in water or other fluids.


Sorry, no etymologies found.


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  • This is just like the classic physics observation by Robert Brown of the random walk traveled by pollen particles floating on water, demonstrating random thermal or "brownian" motion.

    What babies are up to. Ann Althouse 2009

  • For example, although the brownian motion of a particle appears random, it can still be causally described if we know enough about the motions of the particles surrounding it.

    Are Changes Brewing and How Does the Mind Fit In? 2008

  • To elaborate on DeWitt, an l(0) process is white noise and an l(1) process, a classical random walk ("brownian motion"). l(2) is a bit harder to describe: perhaps the location of a vehicle tracked by an inertial device, where the acceleration is "noisy".

    Idiots Delight EliRabett 2010

  • Taleb doesn't argue that outliers are impossible to quantify, he just thinks that the present ordinary brownian motion model underlying mathematical finance should be replaced with fractional brownian motion.

    "Options theory is kind of deep in some way. It was very elegant; it had the quality of physics." Ann Althouse 2009

  • Một cách để vượt qua những chuyển động brownian là mát cơ chế để trỏ, nơi các nguyên tử không còn như rung mạnh. »2009» Tháng 2009

  • Bởi vì ratchet đủ nhỏ để có thể chuyển động brownian chính nó. »2009» Tháng 2009

  • Actually, without the work itself there would be no walking, even under the brownian rachet model.

    Analogy, How Scientifically Powerful is It? 2006

  • Uhh, how am I "dead wrong" because of the proposed brownian ratchet model?

    Analogy, How Scientifically Powerful is It? 2006

  • If you want to say that the function that the G proteins do lead up to the myosin walking mechanism then please as a consequence of brownian motion itself, fully spell it out.

    Analogy, How Scientifically Powerful is It? 2006

  • The mechanical work exploits and overcomes brownian motion resulting in a walking motion, thats usually what machines do, exploit their natural surroundings.

    Analogy, How Scientifically Powerful is It? 2006


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