ther·mo·tax·is 
(thûr′mə-tăksĭs)
(thûr′mə-tăksĭs)n. pl. ther·mo·tax·es (-tăksēz)
1. Movement of a living organism in response to changes in temperature.
2. Normal regulation or adjustment of body temperature.
ther′mo·tactic (-tăktĭk), ther′mo·taxic (-tăksĭk) adj.