from Wiktionary, Creative Commons Attribution/Share-Alike License.
Random motionof particlessuspended in a fluid, arising from those particles being struck by individual moleculesof the fluid.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the random motion of small particles suspended in a gas or liquid
from Wiktionary, Creative Commons Attribution/Share-Alike License
Named after botanist Robert Brown (1773-1858) who investigated the movement of pollen suspended in water.
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