a. [f. BI- pref.2 6 + SERIAL, f. L. series SERIES.] Arranged in two rows or series. Biseriate a. = prec. Biseriately adv., in biseriate order, in a double row.
1839. Proc. Berw. Nat. Club, I. 199. Suckers of the arms biserial.
1870. Rolleston, Anim. Life, 144. Biserial rows of ambulacral ampullæ.
1846. Dana, Zooph. (1848), 215. With cellules interruptedly uniseriate, and occasionally biseriate. Ibid., 223. Septa biseriately cellular.
