Definition from Wiktionary, the free dictionary
celloidin (plural celloidins)
- (biology) A semisolid solution of pyroxylin in ether and alcohol. Used to embed specimens for microscopy before they are sectioned and placed on slides.
1950, John Randal Baker, Cytological Technique, page 123:
- The celloidin will gradually change into a soft gel.
- A specimen embedded in celloidin.