• (n.) A dark box constructed for viewing transparent pictures, with or without a lens.
(de-af´ә-no-skōp″) an instrument for transillumination of a body cavity.
Di`a·phan'o·scope noun [ Greek ... transparent + -scope .] (Photog.) A dark box constructed for viewing transparent pictures, with or without a lens. 
Type: Term Pronunciation: dī-af′ă-nō-skōp Definitions: 1. An instrument for illuminating the interior of a cavity to determine the translucency of its walls. Synonyms: polyscope
diaphanoscope An instrument for illuminating a body cavity with transillumination.