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. [1913 Webster] {Amniotic acid}. (Chem.) [R.] See {Allantoin}. [1913 Webster] Amoeba