What is the meaning of spanish word TARDIS?

The word "TARDIS" in Spanish does not have a specific meaning as it's a proper noun from the British science fiction television series Doctor Who.

TARDIS stands for Time and Relative Dimension in Space and refers to the Doctor's time-traveling spaceship, which is disguised as a blue police box.

While the word itself doesn't have a specific meaning in Spanish, it's recognized by many Spanish speakers as a reference to the Doctor Who universe.