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Webster 1913 Edition

Adj.

Pertaining to Dr.

Robert

Brown

, who first demonstrated (about 1827) the commonness of the motion described below.

Brownian motion

Brownian movement

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

See also: brownian

Brownian ‎(comparative more Brownian, superlative most Brownian)

Of or relating to botanist Robert Brown (1773-1858), who investigated the movement of pollen suspended in water.
1. (physics) Pertaining to motion caused by the random vibration of molecules (Brownian motion).
Of or relating to Capability Brown (Lancelot Brown, 1716?–1783), English landscape architect.

See also: Brownian

brownian ‎(not comparable)