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