Titanium was a metal (PROSE: Venusian Lullaby) on the periodic table with the symbol Ti (TV: Shada) and an atomic number of 22. (PROSE: Iris Wildthyme y Señor Cientocinco contra Los Monstruos del Fiesta)
The vault of the bank on Centuria was made of titanium. (COMIC: Time of the Cybermen) The Curator employed similar principles when renovating the attic flat of 107 Baker Street, lining the walls of its kitchen with temporally resistant titanium. It was for this reason that the kitchen survived consumption by the Void, in turn keeping the Eighth Doctor and Robin Bright-Thompson, ushered inside by the Curator, alive. (AUDIO: The Keys of Baker Street)
The metal used in Vondraxian orbs shared properties with titanium and zinc, but was neither. (PROSE: Trace Memory)
SERVEYOUinc used titanium vault-like doors to protect their most sensitive research at the United System Research Base. (COMIC: The Sound of Our Voices)
When Amy Pond agreed to be Laura's bridesmaid during an October day in the early 21st century, a song was playing at the party. It contained the lyrics "I am titanium / You shoot me down, but I won't fall / I am titanium". (TV: The Power of Three)
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