Artificial intelligent assistant

quadruplate

quadruplate, v. Obs. rare.
  Also 5 quatriplate.
  [f. ppl. stem of L. quadruplāre: see quadruple and -ate3.]
  To multiply by four.

1486 Bk. St. Albans, Her. E vij, Ther be certan nobull men the wich bere theys tractis triplatit..and sum bere hit quatriplatit. 1571 Digges Pantom. i. xi. D iij, Then quadruplate the distance. 1611 Cotgr., Quadrupler..to quadruplate, or make foure times as much. 1656 in Blount Glossogr.


  So quadruplate ppl. a., quadruple. Obs.

c 1470 Henryson Orph. & Eur. 228 Thair leirit he tonis..As duplare, triplare, and..the quadruplait.

Oxford English Dictionary

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