The Collaborative International Dictionary of English v.0.48:

Suprachoroid \Su`pra*cho"roid\, Suprachoroidal
\Su`pra*cho*roid"al\, a. (Anat.)
   Situated above the choroid; -- applied to the layer of the
   choroid coat of the eyeball next to the sclerotic.
   [1913 Webster]