Definition of auricle in US English:



Anatomy Biology
  • 1A structure resembling an ear or earlobe.

    • ‘The auricles are small, clearly separated from the anterior and posterior margins of the shell and are found in the plane of the closing of the valves.’
    • ‘The new species differs from it in being narrower and higher at a comparable growth stage and in having less oblique auricles.’
    1. 1.1
      another term for atrium (of the heart)
      • ‘The heart appears to be the most primitive of all adult vertebrates, with the auricle, ventricle and conus arteriosus arranged in straight line, rather than being doubled over one another.’
      • ‘This involves inserting a device within a catheter into the interior of the heart and which spreads out like an umbrella inside the right and left auricle.’
    2. 1.2 Strictly, a small muscular appendage of each atrium.
      • ‘It has a real beating heart with all its auricles, ventricles and valves in their anatomically correct positions.’
    3. 1.3 The external part or pinna of the ear.
      • ‘Inflammation or infection of external auditory canal and auricle.’
      • ‘An indentation situated in front of the auricle of the ear.’
      • ‘Outside the cranial cavity, the auricle and the semispinalis capitis muscle are seen.’
      • ‘Within head injuries auricles were mainly bruised.’
      • ‘Radiographic examination revealed opacities consistent with bony structure in the auricles of the ears, with the right more prominent than the left.’
      • ‘The long term cosmetic problems arise from resultant destruction of cartilage that forms the skeleton of the auricle.’
      • ‘We have argued that local authorities should make it a requirement for those performing high ear piercing to warn their customers of the possibility of abscess formation and the resulting permanent deformity of the auricle.’
      compartment, cavity, hollow, pocket, cell
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Late Middle English: from Latin auricula ‘external part of the ear’, diminutive of auris ‘ear’.