Temporal armour

Temporal armour was body armour worn by a Nimon upon arriving on Datastore 8. Apart from the energies of the Time Vortex, it could also withstand the rapid descent into an atmosphere of a planet helping to fool the population into believing the Nimon was a god.

The Eleventh Doctor used the temporal armour to remove the Time Vortex leech and save the TARDIS from destruction. (COMIC: Space in Dimension Relative and Time)

Behind the scenes
The comic story Space in Dimension Relative and Time is published by the US-based Titan Comics and consistently uses the American spelling "temporal armor".