Source : Webster's Revised Unabridged Dictionary (1913)

Adnate \Ad"nate\, a. [L. adnatus, p. p. of adnasci. See
   {Adnascent}, and cf. {Agnate}.]
   1. (Physiol.) Grown to congenitally.

   2. (Bot.) Growing together; -- said only of organic cohesion
      of unlike parts.

            An anther is adnate when fixed by its whole length
            to the filament.                      --Gray.

   3. (Zo["o]l.) Growing with one side adherent to a stem; -- a
      term applied to the lateral zooids of corals and other
      compound animals.

Source : WordNet®

adnate
     adj : of unlike parts or organs; growing closely attached; "a
           calyx adnate to the ovary" [ant: {connate}]