English

Noun

guaranine ‎(uncountable)

1. Caffeine extracted from guarana.
   • 2007 July 12, Anna Jane Grossman, “Black for Me, Light for My Hips”, in New York Times:

     V-tonic Bath Spheres by Fresh contains a cola-nut extract that the company promises will energize the skin, and Kiss My Face’s Wake Up toothpaste has guaranine, a form of caffeine found in guarana seeds.