ster·e·o·tax·is (stĕrˌē-ə-tăkˈsĭs) or ster·e·o·tax·y (stĕrˈē-ə-tăkˌsē)

1. A surgical technique that uses medical imaging to precisely locate in three dimensions an anatomical site to which a surgical instrument or a beam of radiation is directed. Also called stereotactic surgery.
2. Movement of an organism in response to contact with a solid body. Also called thigmotaxis.

Related Forms:

• sterˌe·o·tacˈtic (-tăkˈtĭk), sterˌe·o·taxˈic (-tăkˈsĭk), sterˌe·o·tacˈti·cal (-tăkˈtĭ-kəl), sterˌe·o·taxˈi·cal (-tăkˈsĭ-kəl) adjective