Definition of rhaponticin in US English:

rhaponticin

(also rhaponticine)

noun

Chemistry
  • A yellow crystalline compound present in the root of a wild rhubarb, Rheum rhaponticum, and in some other plants.

Origin

Mid 19th century. From post-classical Latin rhaponticum + -in, after German Rhaponticin.

Pronunciation

rhaponticin

/rəˈpɒntɪsɪn/