A measure of the awesomeness of a natural formation, usually geographical. The scale shows how powerful the formation will, upon sight, immediately convert atheists to at least an agnostic philosophy. Something with large magnosity proves that the universe has an guiding force. Those already more pious will simply be compelled to pray, i.e. "Oh my gawd!".
-Mag nos i ty: noun
-Mag nos tic: adjective
The Grand Canyon has great magnosity.
That dame has magnostic knockers.