Definition of piperaceous in US English:

piperaceous

adjective

  • Botany. Of or relating to the family Piperaceae (the pepper family), comprising chiefly tropical, often aromatic, herbaceous plants, shrubs, lianas, and small trees, many of which provide products used as pungent spices.

Origin

Late 17th century (in an earlier sense). In sense 1 from classical Latin piper pepper + -aceous.

Pronunciation

piperaceous

/pɪpəˈreɪʃəs/