Source : Webster's Revised Unabridged Dictionary (1913)

Amniotic \Am`ni*ot"ic\, a. [Cf. F. amniotique.] (Anat.)
   Of or pertaining to the amnion; characterized by an amnion;
   as, the amniotic fluid; the amniotic sac.

   {Amniotic acid}. (Chem.) [R.] See {Allantoin}.

Source : WordNet®

amniotic
     adj : of or related to the amnion or characterized by developing
           an amnion; "amniotic membrane" [syn: {amnionic}, {amnic}]