verb (used with or without object), quad·ru·pled, quad·ru·pling.
Related formsquad·ru·ple·ness, nounquad·ru·ply, adverb
Examples from the Web for quadruple
In these European elections, Le Pen is set to quadruple the National Front's 2009 showing.Elections Could Be the Beginning of the End for Europe|Tracy McNicoll, Nadette De Visser|May 21, 2014|DAILY BEAST
Investigators now believe that the lone bicyclist was a primary target in the quadruple homicide rocking Europe.French Alps Murder Mystery’s Forensic Breakthrough|Barbie Latza Nadeau|October 20, 2012|DAILY BEAST
She arrived at the convention wearing a quadruple strand of pearls and significant diamond studs.Ann Romney's Red Dress At The Republican National Convention|Robin Givhan|August 29, 2012|DAILY BEAST
Over the next four decades, this population is projected to more than quadruple.
Smoke a pack of cigarettes each day and your annual radiation exposure will quadruple.
The specimen which we have engraved is quadruple, but forms one vessel.Ten Thousand Wonderful Things|Edmund Fillingham King
Engines so arranged are termed triple and quadruple expansion engines, or multiple expansion.Farm Engines and How to Run Them|James H. Stephenson
His tone was humble and apologetic as he continued—“My opinion is that this very thing will quadruple the sales of your book.”A Fortnight of Folly|Maurice Thompson
But see what this has meant to the league to have that quadruple supply of the dramas demanded by its members.
Between the two quadruple sets careful gazing reveals two other very faint stars.Pleasures of the telescope|Garrett Serviss