Accelerated temporal progression, (COMIC: The World Shapers) more commonly time acceleration, was a temporal phenomenon produced by different technologies.
The technology of the worldshapers was used to artificially accelerate time and cause rapid environmental changes on uninhabited worlds. Such technology was banished, but was criminally employed on inhabited planets by the Voords, p.e. on Marinus. The Sixth Doctor, Peri Brown and Frobisher were among the people affected by such machines; p.e. Peri's hair and nails grew up in seconds . (COMIC: The World Shapers)