tropotaxis

[trop-uh-tak-sis, troh-puh-]

noun Zoology.

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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019