The TARDIS(/ˈtɑrdɪs/; Time And Relative Dimension In Space) is a time machine and spacecraft in the British science fiction television programme Doctor Who and its associated spin-offs The Sarah Jane Adventures, Torchwood and more.

A TARDIS is a product of the advanced technology of the Time Lords, an extraterrestrial civilisation to which the programme's central character, the Doctor, belongs. A properly maintained and piloted TARDIS can transport its occupants to any point in time and space. The interior of a TARDIS is much larger than its exterior. It can blend in with its surroundings using the ship's "chameleon circuit". TARDISes also possess a degree of sapience (which has been expressed in a variety of ways ranging from implied machine personality and free will through to the use of a conversant avatar) and provide their users with additional tools and abilities including a telepathically based universal translation system.

In the series, the Doctor pilots an apparently unreliable, obsolete Type 40, Mark 1 TARDIS. Its chameleon circuit is broken, leaving it stuck in the shape of a 1960s-style London police box after a visit to London in 1963. The Doctor's TARDIS was for most of the series' history said to have been stolen from the Time Lords' home planet, Gallifrey, where it was old, decommissioned and derelict.

Doctor Who travels in a time machine called the TARDIS--- Time And Relative Dimension (Dimensions) In Space.

With the TARDIS The Doctor can travel to any point in time and space.

The inside of the TARDIS is larger then the outside.

The TARDIS used to have the ability to disguise itself according to its environment around it, but in 1963 when it landed in London it became “stuck” in the form of a police box. The Doctor has given up trying to fix it, because he has grown fond of the police box shape.

Also the vessel’s navigation system is old and unreliable, which is why The Doctor explores the universe at random.

A timey-wimey blue box that's bigger on the inside. Main mode of transportation for the Doctor

Time And Relative Dimentions In Space.
A time/space machine concieved by the Time Lords. It has infinate rooms inside, including several console rooms, from which the ship can be piloted. Doctor Who stole a mark 40 TARDIS and used it to solve intergalactic wrong-doings.

A TARDIS is a product of the advanced technology of the Time Lords, an extraterrestrial civilisation to which the programme's central character, the Doctor, belongs. A properly maintained and piloted TARDIS can transport its occupants to any point in time and any place in the universe. The interior of a TARDIS is much larger than its exterior ("It's bigger on the inside"), which can blend in with its surroundings using the ship's "chameleon circuit". TARDISes also possess a degree of sentience (which has been expressed in a variety of ways ranging from implied machine personality and free will through to the use of a conversant avatar) and provide their users with additional tools and abilities including a telepathically based universal translation system.

The TARDIS apart from having the luxury of time travel has an added feature of having an interior of infinate size contained inside a very limited physical space, this is due to the dimentional rift on the boundarys of the TARDIS front doors.
When you enter a TARDIS you are steping out of your reality and into another through the dimentional tear in space.

The act of inserting a semi-flaccid penis into an orifice and then letting it get bigger on the inside.

Reffering to an action or object;
1) To express retardedness.
2) To express lateness.

See tardiness

1. When you arrive to a destination after the time you're supposed to be there.

2. When you act stupid, borderline retarded