tang-, tact-, tast-, ting-, -tig -tag, -teg-

(Latin: touch, feel; try; reach; handle; evaluate, estimate)

thermotactic (adjective)
1. A reference to the movement of an organism toward or away from a source of heat.
2. The regulation of the bodily temperature.
thigmotactic (adjective)
A reference to an organismic movement towards or away from a mechanical displacement.
traumatotactic (adjective)
A reference to, or a description of, the movement of motile organisms, cells, or organelles (intracellular structures) in response to an injury.