Hear

ear. (her). To perceive by the Hearing (her'-ing). The special sense by which the sonorous vibrations of the air are communicated to the mind. The cerebral center is excited by the vibration of the fluid contents of the labyrinth, or terminal organs of the auditory nerve. Sound presents three elements, pitch, intensity, and timbre. The first depends upon the number of the aerial vibrations; the second upon their amplitude; the third upon their form.