auricle

views updated May 18 2018

au·ri·cle / ˈôrikəl/ • n. Anat. & Biol. a structure resembling an ear or earlobe. ∎ another term for atrium (of the heart). ∎  strictly, a small muscular appendage of each atrium. ∎  the external part or pinna of the ear.

The Oxford Pocket Dictionary of Current English

auricle

views updated May 11 2018

auricle
1. (atrium) The chamber of a heart into which blood flows from veins and from which blood flows to a ventricle.

2. External ear.

3. An internal projection from one of the ambulacral plates around the peristome of echinoids which serves for the attachment of muscles supporting the Aristotle's lantern.

A Dictionary of Zoology MICHAEL ALLABY

auricle

views updated May 18 2018

auricle cavity of the heart XV; external ear, lobe-shaped process XVII. — L. auricula, dim. of auris EAR
So auricular XV (see -AR).

The Concise Oxford Dictionary of English Etymology T. F. HOAD

auricle

views updated Jun 08 2018

auricle (or-i-k'l) n.
1. a small pouch in the wall of each atrium of the heart: the term is also used incorrectly as a synonym for atrium.

2. see pinna.

A Dictionary of Nursing

auricle

views updated Jun 11 2018

auricle
1. See atrium.

2. See pinna.

A Dictionary of Biology

auricle

views updated May 11 2018

auricle An appendage, which may resemble the ear of an animal, occurring at the base of a leaf-blade.

A Dictionary of Plant Sciences MICHAEL ALLABY

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