multiplicative

from WordNet (r) 3.0 (2006)

multiplicative
    adj 1: tending or having the power to multiply or increase in
           number or quantity or degree; "the multiplicative
           tendency of proportional representation"

from The Collaborative International Dictionary of English v.0.48

Multiplicative \Mul"ti*pli*ca*tive\, a. [Cf. F. multiplicatif.]
   Tending to multiply; having the power to multiply, or incease
   numbers.
   [1913 Webster]

[email protected]