Universal translator
From Tardis Wiki, the free Doctor Who reference
A universal translator translated any language in the universe heard or spoken by the person who used one.
They were used by some space-faring humanoids like the Muxteran, given their MediPods could implant one if someone being healed by it didn't have one. (TV: The Ghost Monument)
Valarie Lockwood was fitted with a universal translator, rendering the TARDIS's translation circuit redundant. (AUDIO: The House of Masks)
