| Alethoscope | n. [ Gr. &unr_; true + &unr_; to view. ] An instrument for viewing pictures by means of a lens, so as to present them in their natural proportions and relations. [ 1913 Webster ] |
| Megalethoscope | n. [ Mega- + alethoscope. ] An optical apparatus in which pictures are viewed through a large lens with stereoptical effects. It is often combined with the stereoscope. [ 1913 Webster ] |