Source : Webster's Revised Unabridged Dictionary (1913)

Dorsiventral \Dor`si*ven"tral\, a. [Dorsum + ventral.]
   1. (Biol.) Having distinct upper and lower surfaces, as most
      common leaves. The leaves of the iris are not
      dorsiventral.

   2. (Anat.) See {Dorsoventral}.