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]