- quadrupling - increase by a factor of four
--1 is a kind of multiplication
Derived form: verb quadruple1
- quadruple - increase fourfold; "His stock earning quadrupled"
--1 is one way to multiply, manifold
Sample sentences:Derived forms: noun quadruplicate1, noun quadrupling1, noun quadruple1
They quadruple their earnings this year
Their earnings quadruple this year