melanotype

from The Collaborative International Dictionary of English v.0.48
Melanotype \Me*lan"o*type\, n. [Gr. me`las, me`lanos, black +
   -type.] (Photog.)
   A positive picture produced with sensitized collodion on a
   smooth surface of black varnish, coating a thin plate of
   iron; also, the process of making such a picture. [Written
   also {melainotype}.]
   [1913 Webster]
    

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