Outer-ear definitions

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The part of the ear in many vertebrates that is external to the eardrum (tympanic membrane) and contains the canal leading to the eardrum as well as the ear lobe and other visible structures. In mammals, the outer ear, which is made mostly of cartilage, gathers and focuses incoming sound waves and transmits them to the eardrum.
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(anatomy) The outer portion of the ear which includes the auricle and the ear canal and leads to the eardrum.
noun
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