Au-di´tion (L. audio, to hear). The act of hearing sounds.
Au´di-to-ry Nerve. One of the cranial nerves; it is the special nerve of hearing.
Au´ri-cle (L. auris, the ear). A cavity of the heart.
Bar´i-tone (Gr. βαρύς, barus, heavy, and τόνος, tonos, tone). A variety of male voice between the bass and tenor.
Bel-la-don´na (It. beautiful lady). A vegetable narcotic poison. It has the property of enlarging the pupil, and thus increasing the brilliancy of the eye; so called from its use by Italian ladies.
Bi-cus´pid (L. bi, two, and cuspis, prominence). The name of the fourth and fifth teeth on each side of the jaw; possessing two prominences.
Bile. The gall, or peculiar secretion of the liver; a viscid, yellowish fluid, and very bitter to the taste.
Bronch´i (Gr. βρόγκος, bronkos, the windpipe). The two first divisions or branches of the trachea; one enters each lung.
Bronch´i-al Tubes. The smaller branches of the trachea within the substance of the lungs, terminating in the air-cells.
Bronch-i´tis (from bronchia, and itis, a suffix signifying inflammation). An inflammation of the larger bronchial tubes; a "cold" affecting the lungs.