'Piperaceous' definitions:

Definition of 'Piperaceous'

From: GCIDE

Piperaceous \Pip`er*a"ceous\, a. [L. piper pepper.] (Bot.) Of or pertaining to the order of plants (Piperace[ae]) of which the pepper (Piper nigrum) is the type. There are about a dozen genera and a thousand species, mostly tropical plants with pungent and aromatic qualities. [1913 Webster] Piperazine