Dimensional transcendentalism



A dimensionally transcendental, sometimes called transcendentally dimensional, object was one which appeared larger inside than outside, an effect made possible by transcendental engineering.

It's Bigger on the Inside
For the most part, each of the Doctor's companions have been in awe of the larger inside of the seemingly small police box shape of the TARDIS, often commenting that "it's bigger on the inside." (TV: The Three Doctors, Robot, Rose, The Runaway Bride, Smith and Jones, The Eleventh Hour, The Bells of Saint John) The Doctor always looks forward to this, (TV: The Vampires of Venice) but it came as a surprise that Victorian Clara said if was "smaller on the outside", prompting him to note it was a first,(TV: The Snowmen) but not a last. (TV: Into the Dalek)