de·dif·fer·en·ti·a·tion 
(dē′dĭf-ə-rĕn′shē-āshən)
(dē′dĭf-ə-rĕn′shē-āshən)n.
Biology
Biology
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.
de′dif·fer·enti·ate′ v.