Dimension A dimension , sometimes also referred to as a plane ( PROSE : " Twilight of the Gods " , TV : " Time Heist " ) and once as a " time - space " , ( TV : " The Greatest Show in the Galaxy " ) was a property of space , extending in a given direction , which , when combined with other dimensions of width and height and time , made up the universe . Characteristics . There were countless billions of dimensions , some of them incomprehensibly different to N - Space . Beings from these distant dimensions obeyed very different laws of physics and were ( presumably ) forbidden to cross into other dimensions . Nobody No - One came from a reality 45 billion dimensions away from N - Space and was composed of language and communication instead of matter and energy . ( AUDIO : " The Word Lord " ) The Sixth Doctor described there being trillions and trillions of alternate dimensions , some of which could be infinitesimally small micro - universe s . ( AUDIO : " The Macros " ) However , the Seventh Doctor later commented that one billion cubic centimetres was small in terms of a dimension ' s size . ( AUDIO : " The Light at the End " ) Time was often considered by human s to be the " fourth dimension " ( TV : " An Unearthly Child " ) and Vicki Pallister later elaborated that time , even though a dimension in itself , had dimensions of its own . The First Doctor even stated , in their adventure at the time , that he did not understand " " this " " fourth dimension . ( TV : " The Space Museum " ) Different universes possessed different time dimensions . Time moved faster in Capron ' s universe , requiring metabolisms to be altered so as to prevent rapid ageing when travelling to it from N - space . ( AUDIO : " The Macros " ) According to the Twelfth Doctor , the Boneless were " from a universe with only two dimensions " , although the Doctor also described them as " creatures from another dimension " and mentioned a way of sending them " back to their own dimension " . People in N - Space , where three dimensions were required for life to survive there , had theorised such a universe ' s existence , but according to the Doctor , " no - one could go there and prove its existence without a heck of a diet " . ( TV : " Flatline " ) Terminology . " Dimension " was sometimes used interchangeably with " universe " or " plane " . The Elder God s were said to have shunted themselves into a " parallel dimension " ( PROSE : " Millennial Rites " ) and a " parallel universe " . ( PROSE : " All Consuming - Fire " ) Dimensions within the universe . The universe had eleven dimensions in total . ( PROSE : " Parasite " ) Depending on perspective , the " normal " universe was variously described as being three dimensions , ( AUDIO : " Paradise 5 " ) four dimensions , ( AUDIO : " Storm Warning " , " The Hollows of Time " ) and five dimensions , with the other six " higher dimensions " forming the Six - Fold - Realm . The first three , the three " primary dimensions , " ( AUDIO : " The Invasion of E - Space " ) were required to sustain native life forms such as human s and Time Lord s . As the Twelfth Doctor theorised , " Perhaps [ the Boneless didn ' t ] even understand that we need [ ed ] three dimensions to live in . " ( TV : " Flatline " ) While these made up space in the physical sense , time was considered to be the fourth dimension and space the fifth , ( TV : " An Unearthly Child " ) altogether forming the space - time continuum where space and time were connected , since they both came into being at the same moment . ( AUDIO : " The Forbidden Time " ) In relation to four - dimensional space - time , the universe had seven " concealed " dimensions , " the intermediate dimensions , " which held space together . ( AUDIO : " The Hollows of Time " ) Alternatively , access to the " fifth dimension " was equated as being access to time travel . ( AUDIO : " Mission to Magnus " ) After the bite of a Vortisaur aged the skin of Peter Rathbone ' s forearm to that of a sixty - year old , the Eighth Doctor described the Vortisaur s , who were native to the Time Vortex , as " five dimensional predators [ who ] make five dimensional bite marks " . ( AUDIO : " Storm Warning " ) The omniverse was implied to have an infinite number of dimensions . ( PROSE : " Spiral Scratch " ) Other dimensions . Hyperspace was another dimension . ( TV : " The Stones of Blood " ) It could be reached using a black hole , which essentially collapsed dimensions into a singularity . ( TV : " The Horns of Nimon " ) According to one account , a TARDIS ' interior existed as a separate dimension from the rest of the universe . This meant the interior didn ' t exist , creating temporal grace . ( TV : " The Hand of Fear " ) Another account described TARDISes as being a part of the universe ; the Tenth Doctor said that his TARDIS was " the last TARDIS in the universe " . ( TV : " Rise of the Cybermen " ) According to another account , the Eleventh Doctor said that the Doctor telling Mels that the TARDIS existed in a state of temporal grace was " a clever lie " to ensure that Mels didn ' t fire her gun . ( TV : " Let ' s Kill Hitler " ) Nonetheless , the Eleventh Doctor also described the huge room inside the TARDIS which was surrounded by a tiny exterior as " basically another dimension " . ( TV : " The Vampires of Venice " ) The external dimensions of the Doctor ' s TARDIS were once leeched by the Boneless , making its exterior shell smaller but keeping the interior the same size . ( TV : " Flatline " ) A location of space called the Arc of Infinity was known as an ancient curve between dimensions . ( TV : " Arc of Infinity " ) N - Forms were constructs created by the Patrexes that were able to cross dimensions and exist in pocket dimensions of their own . ( PROSE : " Damaged Goods " ) The Mavora existed in only the first two dimensions , and thus they were a completely flat shape and could slide between the atoms of the universe . ( COMIC : " The Broken Man " ) The 2Dis was able to restore three dimensions to small objects the Boneless had flattened into two dimensions and reverse the process . After the Boneless took on a 3D form in N - Space , they had the ability to " restore " dimensions as well . ( TV : " Flatline " ) E - Space was a small dimension connected to N - Space by the Logopolitan s in an effort to delay the death of the universe from entropy . Access was through a Charged Vacuum Emboitment . The Fourth Doctor and Romana II stumbled through one such CVE . ( TV : " Full Circle " ) They found the Great Vampire hiding there . ( TV : " State of Decay " ) According to Fenric , the Doctor trapped him in the Shadow Dimensions for seventeen centuries ( TV : " The Curse of Fenric " ) which were remnants of the pre - universe . ( PROSE : " The Curse of Fenric " ) The Seventh Doctor claimed King Arthur ' s craft found in Lake Vortigern was from another dimension or parallel universe . ( TV : " Battlefield " ) The Antiverse was a universe comprised of anti - time . Use of the Oubliette of Eternity would send people to this universe , turning them into Neverpeople . The Eighth Doctor and Romana II went there looking for the remains of Rassilon . ( AUDIO : " Neverland " ) The Divergent Universe was a universe created by Rassilon to contain the Divergence , a race that would theoretically replace the Time Lord s . The Eighth Doctor went there on a self - imposed exile . ( AUDIO : " Zagreus " ) Jason Kane spent several years in a hell dimension . It was predominately rock . Tunnelling craft tunnelled their way between habitable areas . ( PROSE : " The Infernal Nexus " ) According to the Tenth Doctor , the Morass was a dimension where time and space had been torn apart . ( COMIC : " The Crimson Hand " ) The bubble universe was a universe outside of N - Space which could be accessed from N - Space via a space - time rift . ( TV : " The Doctor ' s Wife " ) The after - universe had twenty - seven dimensions , all of which Saraquazel existed in . ( PROSE : " Millennial Rites " ) An empty dimension was a " spare dimension " " every TARDIS " carried as standard equipment . Someone imprisoned in there could not die , but they could be caged until the end of eternity . ( COMIC : " Doctor Who and the Iron Legion " ) In 2011 , the Koggnossenti hubship transmatted to London from another dimension . ( AUDIO : " Technophobia " )