n. [ Gr. &unr_; like glue; ko`lla glue + &unr_; 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 tannin. [ 1913 Webster ]