Definition of rheotropism in English:

rheotropism

noun

Biology
  • The orientation or movement of an organism in response to a current of water.

Origin

Late 19th century; earliest use found in Journal of the Royal Microscopical Society. From rheo- + tropism, after German Rheotropismus.

Pronunciation

rheotropism

/ˌriːə(ʊ)ˈtrəʊpɪz(ə)m/