-tropic

a combining form with the meanings “turned toward, with an orientation toward” that specified by the initial element (geotropic), “having an affinity for, affecting” what is specified (lipotropic; neurotropic; psychotropic), “affecting the activity of, maintaining” a specified organ (gonadotropic).
Compare -trophic.

Origin of -tropic

see origin at tropic

Words nearby -tropic

-tron, -trope, -troph, -trophic, -trophy, -tropic, -tropism, -tropous, -tropy, -tude, -tuple

British Dictionary definitions for -tropic

-tropic

adj combining form

turning or developing in response to a certain stimulus heliotropic

Word Origin for -tropic

from Greek tropos a turn; see trope

Medical definitions for -tropic

-tropic

suff.

Affecting or attracted to something specified:gonadotropic.