Tautology

Tautology is the unnecessary repetition of words that effectivly mean the same thing. The popular example of this is "ATM machine" when the M already stands for machine, making it "automated teller machine machine."

Luke Rattigan was irritated by people who used tautology, particularly when the Tenth Doctor called his invention the "ATMOS system" when ATMOS already stood for "Atmospheric Omission System." (TV: The Sontaran Stratagem)

The Fourth Doctor found the GlobeSphere company name a bit tautological. (AUDIO: Energy of the Daleks)