'Caffetannic acid' definitions:

Definition of 'Caffetannic acid'

From: GCIDE

Caffetannic \Caf`fe*tan"nic\, a. [Caffeic + tannic.] (Chem.) Pertaining to, or derived from, the tannin of coffee. [1913 Webster]
Caffetannic acid, a variety of tannin obtained from coffee berries, regarded as a glucoside. [1913 Webster]