Definition of auricle in English:

auricle

Line breaks: aur|icle
Pronunciation: /ˈɔːrɪk(ə)l
 
/

noun

Anatomy & Biology
  • 1A structure resembling an ear or ear lobe: grass leaves often have two auricles at the junction between the leaf sheath and the blade
    More example sentences
    • 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.
  • 1.1The external part or pinna of the ear.
    More example sentences
    • Within head injuries auricles were mainly bruised.
    • Inflammation or infection of external auditory canal and auricle.
    • Radiographic examination revealed opacities consistent with bony structure in the auricles of the ears, with the right more prominent than the left.
  • 2 another term for atrium (of the heart). blood passes downward from the auricle to the ventricle
    More example sentences
    • 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.
    • 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.
  • 2.1A small muscular flap on the surface of each atrium of the heart.
    More example sentences
    • It has a real beating heart with all its auricles, ventricles and valves in their anatomically correct positions.

Origin

late Middle English: from Latin auricula 'external part of the ear', diminutive of auris 'ear'.

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