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pedesis

 

Definitions from WordNet

Noun pedesis has 1 sense
  1. Brownian movement, Brownian motion, pedesis - the random motion of small particles suspended in a gas or liquid
    --1 is a kind of movement, motion

Definitions from the Web

Pedesis

Definition:

1. (noun) The random motion of microscopic particles suspended in a fluid due to collisions with molecules in the fluid.

2. (noun) The Brownian motion of particles.

Examples:

1. The phenomenon of pedesis is observed in the movement of pollen grains in water.

2. Pedesis can be observed under a microscope as small particles appear to move erratically.

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