meatus

Definitions of meatus
  1. noun
    a natural body passageway
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    types:
    acoustic meatus, auditory canal, auditory meatus, ear canal, external auditory canal
    either of the passages in the outer ear from the auricle to the tympanic membrane
    nasal meatus
    the passages in the nasal cavity formed by the projections of the nasal conchae
    type of:
    passage, passageway
    a path or channel or duct through or along which something may pass
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