The Collaborative International Dictionary
Populin
Populin \Pop"u*lin\, n. [L. populus poplar: cf. F. populine.] (Chem.) A glycoside, related to salicin, found in the bark of certain species of the poplar ( Populus), and extracted as a sweet white crystalline substance.
Wiktionary
populin
n. (context organic compound English) A glycoside, related to salicin, found in the bark of certain species of the poplar (''Populus'').
Wikipedia
Usage examples of "populin".
The White or Aspen Poplar is a common tree, and contains active principles termed Populin and Salicin, both of which are tonic.