(definition) by Webster 1913 Tue Dec 21 1999 at 22:15:40

Brown"i*an (?), a.

Pertaining to Dr. Robert Brown, who first demonstrated (about 1827) the commonness of the motion described below.

Brownian movement, the peculiar, rapid, vibratory movement exhibited by the microscopic particles of substances when suspended in water or other fluids.

 

© Webster 1913.

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