D defs.my
Entry 1 sense Webster, 1913

Undifferentiated

/ən-dĭf-ẽr-ĕn'-shē-ātˌ-ĭd/ · Un·dif·fer·en·ti·a·ted · IPA /əndɪfərˈɛnʃiːˌeɪtɪd/
01 a. Not differentiated; specifically (Biol.), homogenous, or nearly so; -- said especially of young or embryonic tissues which have not yet und…
  1. 1.
    Not differentiated; specifically (Biol.), homogenous, or nearly so; -- said especially of young or embryonic tissues which have not yet undergone differentiation (see Differentiation, 3), that is, which show no visible separation into their different structural parts.(Biol.) See: Differentiation