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Tardis

Pronunciation: /ˈtɑːdɪs/

Definition of Tardis

noun

1a time machine.

2a building or container that is larger inside than it appears to be from outside.

Origin:

the name (said to be an acronym of time and relative dimensions in space) of a time machine which had the exterior of a police telephone box in the British TV science-fiction series Doctor Who, first broadcast in 1963