Definition of auricle in English:


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


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.


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

More definitions of auricle

Definition of auricle in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day tortie
Pronunciation: ˈtɔːtiː
a tortoiseshell cat