disassimilative

from The Collaborative International Dictionary of English v.0.48

Disassimilative \Dis`as*sim"i*la*tive\, a. (Physiol.)
   Having power to disassimilate; of the nature of
   disassimilation.
   [1913 Webster]

         Disassimilative processes constitute a marked feature
         in the life of animal cells.             --McKendrick.
   [1913 Webster]