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Movement of an organism in response to a current of water.
rhe′o·tac′tic (-tăk′tĭk) adj.
(Biology) movement of an organism towards or away from a current of water
the tendency of certain living things to move in response to the mechanical stimulus of a current of water.See also: Motion
the tendency of some plants to respond to a current of water by growing with it (positive rheotaxis) or against it (negative rheotaxis).See also: Water