syndactyl

from The Collaborative International Dictionary of English v.0.48
Syndactyl \Syn*dac"tyl\, Syndactyle \Syn*dac"tyle\, a. [Syn- +
   Gr. ? finger, toe.] (Zool. & Med.)
   Having two or more digits wholly or partly united. See
   {Syndactylism}.
   [Webster 1913 Suppl.]
    

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