What is the meaning of the prefix tract?
I've never heard of the prefix form of this word, although it is quite common in root form as a bundle of nerve fibers or similar to tract (trakt), [TA] Do not confuse this word with track.1. An elongated area; a passage or pathway.
See also: fascicle. Synonym(s): tractus [TA]
2. An abnormal passage (for example, a fistula or sinus communicating with an abscess cavity).
Perhaps in prefix form it means a pathway, if it were then an anatomical term like radial or inferior would follow it.