Brownian
Pronunciation : Brown"i*an
Part of Speech : a.
Definition : Defn: 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.
Source : Webster's Unabridged Dictionary, 1913
Merriam-Webster's Everyday Language Reference Set: Includes: The Merriam-Webster Dictionary, The Merriam-Webster Thesaurus, and The Merriam-Webster Vocabulary Builder