The Collaborative International Dictionary of English v.0.48:

Serial \Se"ri*al\, a.
   1. Of or pertaining to a series; consisting of a series;
      appearing in successive parts or numbers; as, a serial
      work or publication. "Classification . . . may be more or
      less serial." --H. Spencer.
      [1913 Webster]

   2. (Bot.) Of or pertaining to rows. --Gray.
      [1913 Webster]

   Serial homology. (Biol.) See under Homology.

   Serial symmetry. (Biol.) See under Symmetry.
      [1913 Webster]