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outer ear

outer ear (external ear) The part of the ear external to the tympanum (eardrum). It is present in mammals, birds, and some reptiles and consists of a tube (the external auditory meatus) that directs sound waves onto the tympanum. In mammals it may include an external pinna, which extends beyond the skull.

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outer ear

outer ear (owt-er) n. the pinna and the external auditory meatus of the ear.

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"outer ear." A Dictionary of Nursing. . Encyclopedia.com. 23 Sep. 2018 <http://www.encyclopedia.com>.

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"outer ear." A Dictionary of Nursing. . Retrieved September 23, 2018 from Encyclopedia.com: http://www.encyclopedia.com/caregiving/dictionaries-thesauruses-pictures-and-press-releases/outer-ear

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