noun, plural trans·par·en·cies.
Also, trans·par·ence. the quality or state of being transparent.
something transparent, especially a picture, design, or the like on glass or some translucent substance, made visible by light shining through from behind.
3. Photography. a.
the proportion of the light that is passed through the emulsion on an area of a photographic image
a photographic print on a clear base for viewing by transmitted light.