A T is a term made from vertically symmetrical letters.
A T a.k.a. Ataxia telangiectasia is a rare, neurodegenerative, inherited disease causing severe disability. Ataxia refers to poor coordination and telangiectasia to small dilated blood vessels, both of which are hallmarks of the disease.
- also known as A-T, Boder-Sedgwick syndrome, Louis–Bar syndrome