Definition of quadriplicate in US English:

quadriplicate

noun

  • Quadruplicate.

adjective

  • 1Zoology and Palaeontology. Of a shell: having four folds or pleats.

  • 2Quadruplicaterare.

Origin

Mid 18th century (in an earlier sense). Alteration of quadruplicate after quadri-; compare later quadruplicate.