Dyzzleberry Dictionary ::

Thorium Lensing Device 

TLD stands for Thorium Lensing Device. Dr. D.D. Whatsus accidentally discovered the Lensing Energizing Mechanism while at graduate school working on his Ph.D. His discovery was immediately classified as top secret by the Authairian government and the Authairian Air Force developed the TLD as a means of traveling through space at previously impossible speeds