The Collaborative International Dictionary
tragacanthin
Cerasin \Cer"a*sin\, n. (Chem.) A white amorphous substance, the insoluble part of cherry gum; -- called also meta-arabinic acid.
2. (Chem.) A gummy mucilaginous substance; -- called also bassorin, tragacanthin, etc.
Wiktionary
tragacanthin
n. (context chemistry English) The water-soluble part of tragacanth.