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2 definitions found
 for Collodion
From The Collaborative International Dictionary of English v.0.48 :

  Collodion \Col*lo"di*on\, n. [Gr. ? like glue; ko`lla glue + ?
     form. Cf. Colloid.] (Chem.)
     A solution of pyroxylin (soluble gun cotton) in ether
     containing a varying proportion of alcohol. It is strongly
     adhesive, and is used by surgeons as a coating for wounds;
     but its chief application is as a vehicle for the sensitive
     film in photography.
     [1913 Webster]
     Collodion process (Photog.), a process in which a film of
        sensitized collodion is used in preparing the plate for
        taking a picture.
     Styptic collodion, collodion containing an astringent, as
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

      n 1: a colorless syrupy solution of pyroxylin in ether and
           alcohol; used as a coating for wounds or photographic films

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