a. [f. BI- pref.2 1 + AURICULAR.] Having two auricles. Biauriculate a. the same.
1835. Kirby, Hab. & Inst. Anim., II. xxii. 414. Heart … biauriculate.
1839. Todd, Cycl. Anat., III. 991. A bi-auricular structure of the heart, as in the Siren.
