noun. Reversion of a specialized cell or tissue to an unspecialized form. Dedifferentiation may occur before the regeneration of appendages in plants and certain animals and in the development of some cancers.

noun. The loss or reversal of differentiation.

noun. the loss of specialization in form or function

"War, from this point of view, is a precondition for development along new lines of necessity, and the dedifferentiation is the first stage of"

dedifferentiate  

adaptation  adaption  adjustment