Wiktionary
n. (context medicine English) stereotaxic surgery: surgery that uses a three-dimensional coordinate system to locate small targets inside the body.
Wikipedia
Stereotaxy (from stereo meaning "solidity", and tactile meaning "touch") refers to any technique that involves the recording and reproduction of three-dimensional haptic information or creating an illusion of depth to the sense of touch within an otherwise-flat surface. Unlike the current trend in haptic technology to provide haptic perception of simulated, virtual objects within an augmented-reality (that is, within a mostly-realistic) setting, stereohapty, which, when applied as a field of study, is known as stereohaptics or stereotactics, stereotaxy aims to provide an illusion of three-dimensional depth to the sense of touch by the human body. This resembles how stereoscopy, its visual counterpart, is meant to provide a visual illusion of depth to otherwise-flat images (such as 3-D films), a process known as stereopsis.