Oroheliograph
Pronunciation : Or`o*he"li*o*graph
Part of Speech : n.
Definition : Defn: A camera for obtaining a circular panoramic view of the horizon. The photographic plate is placed horizontally with a vertical lens above. A mirror of peculiar shape reflects light from the entire horizon to the lens, by means of which it is focused upon the plate.
[Gr. mountain + helio- + -graph.] (Photog.)
Source : Webster's Unabridged Dictionary, 1913