celloidin

plural celloidins

1. biologyA semisolid solution of pyroxylin in ether and alcohol. Used to embed specimens for microscopy before they are sectioned and placed on slides.

   The celloidin will gradually change into a soft gel.

   1950, John Randal Baker, Cytological Technique, page 123

2. A specimen embedded in celloidin.

   I will not cut the celloidins or check the bibliography for his book.

   2006, Dolores Landy Bentham, “Fresh Air”, in Janet Weinberg, editor, Still Going Strong, →ISBN, page 254