radiotropic

[rā′dē-ō-trŏpĭk, -trōpĭk]
Related formsra′di•otro•pism (-ŏtrə-pĭz′əm) n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.