Definify.com
Webster 1913 Edition
Collodion
Col-lo′di-on
,Noun.
[Gr. [GREEK] like glue;
κόλλα
glue + [GREEK] 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.
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.