The Collaborative International Dictionary
Megascopical
Megascopic \Meg`a*scop"ic\, Megascopical \Meg`a*scop"ic*al\, a.
(Physics) Of or pertaining to the megascope or the projection upon a screen of images of opaque objects. (b) Enlarged or magnified; -- said of images or of photographic pictures, etc.
(Geol.) Large enough to be seen; -- said of the larger structural features and components of rocks which do not require the use of the microscope to be perceived. Opposed to microscopic.