Panorama (5)
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I believe the answer is:
vista
'panorama' is the definition.
(I know that panorama can be written as vista)
This is all the clue.
(Other definitions for vista that I've seen before include "One gives a long look" , "View (with avenue)" , "Panoramic scene" , "Prospect, view" , "A view as seen through a long narrow opening" .)