Rel
A rel was a Dalek unit of measurement, principally of time.
Not only did the Daleks used rels for time measurement, (AUDIO: The Genocide Machine, The Mutant Phase, The Four Doctors, Blood of the Daleks, TV: Doomsday, COMIC: The Dalek Project) but the Kaleds had before them as well. (AUDIO: Guilt) A rel was approximately 1.2 seconds. (TV: Evolution of the Daleks)
In other contexts, it was a unit of speed. (COMIC: Plague of Death, The Emissaries of Jevo) A rel was also used as a unit of hydroelectric energy, not to be confused for a vep, the unit used for artificial sunlight. (The Dalek Book)[additional sources needed] When the New Dalek Empire tried to destroy the universe with the reality bomb using the Medusa Cascade, they counted down from two hundred rels until their attempt to use it. (TV: Journey's End)
Behind the scenes
Before appearing in early Doctor Who comics, the word rel originated from the film Daleks' Invasion Earth 2150 A.D. starring Peter Cushing as Dr. Who. However, this wiki does not consider the Peter Cushing movies as part of the DWU.