A sorcerer-contractor builds a structure on Megas-Tu

A sorcerer-contractor was a contractor who used magic to complete his clients' projects. Sorcerer-contractors existed in the alternate universe in which Megas-Tu is located. (TAS: "The Magicks of Megas-Tu")

In the VHS release of the episode, the last "er" is missing from the word "sorcerer", as in "sorcer-contractor", but this has been since corrected in the DVD release. This "correct" spelling had previously appeared in the original Star Trek Concordance.