[trop-uh-tak-sis, troh-puh-]
noun Zoology.
  1. straight movement by an organism toward or away from a source of stimulation as a result of comparing information received by paired sensory receptors on both sides of the body.
Compare klinotaxis.

Origin of tropotaxis

First recorded in 1930–35; tropo- + -taxis Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018