part of the ear which extends from the head, external part of the ear
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Outer ear Definition from Language, Idioms & Slang Dictionaries & Glossaries
Noun
1. the part of the ear visible externally
(synonym) external ear
(hypernym) external organ
(part-holonym) auditory apparatus
(part-meronym) auditory meatus, acoustic meatus, ear canal, auditory canal, external auditory canal
Outer ear Definition from Medicine Dictionaries & Glossaries
external portion of the ear, consisting of the pinna, or auricle, and the ear canal.
National Institute of Deafness and Other Communication DisordersOuter ear Definition from Encyclopedia Dictionaries & Glossaries
The outer ear is the external portion of the ear, which consists of the pinna, concha, and external auditory meatus. It gathers sound energy and focuses it on the eardrum (tympanic membrane). One consequence of the configuration of the external ear is to selectively boost the sound pressure 30- to 100-fold for frequencies around 3 kHz. This amplification makes humans most sensitive to frequencies in this range - and also explains why they are particularly prone to acoustical injury and hearing loss near this frequency. Most human speech sounds are also distributed in the bandwidth around 3 kHz.
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