Doctor Who is a BBC science-fiction TV show. It first aird from 1963-89, then revived in 2005.
The show follows an alien known only as "The Doctor" who has a time machine disguised as a 1950's Police Box. It is much bigger on the inside, and is known as the TARDIS. The Doctor's species is "Time Lord". They have the ability to regenerate (a process by which they change their bodies when they are fatally injured to escape death; each Time Lord has a maximum of 12 regenerations).
The Doctor usually travels in the company of humans, at least one of which is always a young, often attractive female. They travel through time and space, saving planets, rescuing civilizations, defeating monsters, righting wrongs and doing an awful lot of running.
The revived series is one of the best series of anything ever created by the hands of man, and the opening titles sequence of series 1-4 was INCREDIBLE. However, the 5th series was widly regarded as crap, and, contrary to popular belief, this had nothing to do with the new actor playing The Doctor. It was mainly due to the craptacular and cheap new opening sequence, the mediocre and boring new theme, unexciting plots, unecessary and bad redesigning of most aspects of the series, lack of recurring characters, consistent plot holes and continuity errors, and most of all, the HORRIFIC mutilation of the Daleks, who had, up until series 5, been perfect in their design, but were terribly redesigned in series 5.
1) "Wow! That episode of Doctor Who was so cool! Did you see the Sontaran ship explode? It was awesome!"

2) "Man! That episode was crap! Why did they redesign the Daleks? Now they look like obese telletubbies!
by imjustchillin April 20, 2011
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THE good doctor!! w00t

Popular science fiction show. UK

Tom Baker was the best doctor BTW

He uses the TARDIS on a regular basis
by djjiles February 20, 2005
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Half Human and half Gallifreyan Time Lord who saves our planet on a regular basis. His birth place of Gallifrey has been destroyed.
Did you see Doctor Who last night?
by Arron Clements April 14, 2005
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1. A once excellent show that has now, rather sadly, gone up its own (or Russell T Davies's) arse.
As in:

"Doctor Who was best when it was like Hammer House of Horror! Not a ruddy soap opera!"

or:

"Cut out the soppy crap & end it when the story ends not drag it out for another 15 minutes!"

or:

"Doesn't anybody care anymore?"

---The cries of Dr Who's true fans.
by beep_the_meep_rules July 12, 2008
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"My Doctor Who (doctor) had plenty of room in that tardis she's got!"
by batmum July 27, 2006
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n. The title given to anyone or anything that is cool.
Tayla finished the Impossible Quiz. She is Doctor Who's Shoes.

I reccomend that you try this caramel ice cream. It's Doctor Who's Shoes.
by Full Metal Alastair July 19, 2008
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A delightful group of doctor who fans (aka whovians) that enjoy two hearted aliens, bow ties, and police boxes that occasionally have their living selves transferred into women named "Idris". Members of the doctor who fandom are also well adapted to change. They have to be considering that the main character gains a new actor constantly. It sounds odd, but some whovians (like me) prefer to call it "ood".
Friend: what are you always doing on tumblr?
Me: communicating with members of the doctor who fandom.
Friend: the what?
Me: you know. The awesome people.
Friend: geek
Me: thank you
by The time lord December 31, 2014
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