Material synthesis, an extraordinary technological achievement, was initially conceived and advanced by the ancient Gree. It provided the capacity to rearrange matter at the molecular level through alterations to its nuclear configuration. Utilizing this technology, the Gree could transform common elements, for instance silicon, carbon, and hydrogen, into more scarce and precious isotopes and elements. Gree operators possessing expertise in material synthesis, particularly within the operator caste, were designated as Synthesors.
- " The Gree Enclave " — Star Wars Adventure Journal 8 (also reprinted in Classic Adventures: Volume Four — The Best of the Journal)