The ear (actually, the pinna which is the principal projecting part of the ear) or something that is ear shaped like the upper chamber (atrium) of the heart.
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1. The projecting shell-like structure on the side of the head, constituting, with the external acoustic meatus, the external ear. SYN: auricula (1) [TA], ala auris, pinna (1). 2. SYN: auricles (of atria).
- accessory auricles small, fleshy nodules or folds, sometimes with supporting cartilage, occasionally found along the margins of the embryonic branchial clefts.
- atrial a. SYN: auricles (of atria). SEE ALSO: left atrium of heart, right atrium of heart.
- cervical a. accessory a. on the neck.
- left a. [TA] the small conical projection from the left atrium of the heart. SYN: auricula atrii sinistra [TA], a. of left atrium, left auricular appendage.
- a. of left atrium SYN: left a..
- auricles (of atria) [TA] a small conical (“ear-shaped”) pouch projecting from the upper anterior portion of each atrium of the heart, increasing slightly the atrial volume. See left a., right a.. SYN: a. (2) [TA], auricula (2) [TA], auriculae atrii [TA], atrial appendage, atrial a., atrial auricula, auricular appendix.
- right a. [TA] the small conical projection from the right atrium of the heart. SYN: auricula atrii dextra [TA], a. of right atrium, auricular appendage (1), right auricular appendage.
- a. of right atrium SYN: right a..

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au·ri·cle 'ȯr-i-kəl n
1 a) PINNA
b) an atrium of the heart
2) an angular or ear-shaped anatomical lobe or process (as an auricular appendage of the heart)

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1. a small pouch in the wall of each atrium of the heart: the term is also used incorrectly as a synonym for atrium.

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au·ri·cle (awґrĭ-kəl) [L. auricula, q.v.] 1. auricula. 2. auricula atrii. 3. formerly, one of the atria of the heart.

Medical dictionary. 2011.

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  • Auricle — has the following meanings: * the external portion of the ear, the pinna * a small conical pouch that projects from each atrium of the heart ** Right auricle ** Left auricle * a name for the left or right atria of the heart * a name given to ear… …   Wikipedia

  • Auricle — Au ri*cle, n. [L. auricula, dim. of auris ear. See {Ear}.] 1. (Anat.) (a) The external ear, or that part of the ear which is prominent from the head. (b) The chamber, or one of the two chambers, of the heart, by which the blood is received and… …   The Collaborative International Dictionary of English

  • auricle — part of the ear, 1650s, from L. auricula ear, dim. of auris (see EAR (Cf. ear) (1)). As a chamber of the heart, early 15c., from Latin, so called from a perceived similarity in shape to an animal s ear …   Etymology dictionary

  • auricle — ► NOUN 1) the external part of the ear. 2) an atrium of the heart. ORIGIN Latin auricula little ear …   English terms dictionary

  • auricle — [ô′ri kəl] n. [ME < L auricula, dim. of auris, EAR1] 1. Anat. a) the external part of the ear; pinna b) Obs. an atrium of the heart 2. Biol. an earlike part or organ …   English World dictionary

  • auricle — auricled, adj. /awr i keuhl/, n. 1. Anat. a. the projecting outer portion of the ear; pinna. b. Also called auricular appendage. an ear shaped appendage projecting from each atrium of the heart. c. (loosely) the atrium. 2. Bot., Zool. a part like …   Universalium

  • auricle reflex — involuntary movement of the auricle of the ear produced by auditory stimuli (more pronounced in some other animals than in humans) …   Medical dictionary

  • auricle — noun Etymology: Latin auricula, from diminutive of auris ear more at ear Date: 15th century 1. a. an atrium of a heart b. pinna 1 c. an anterior ear shaped pouch in each atrium of the human heart 2. an angular or ear shaped lobe …   New Collegiate Dictionary

  • auricle — atrium …   Dictionary of ichthyology

  • auricle — n. [L. auricula, little ear] 1. Any ear shaped structure or small lobe like appendage. 2. An atrium or chamber of the heart. 3. (ARTHROPODA: Insecta) a. In Hymenoptera, a flat plate forming a part of the pollen basket or corbicula of honeybees. b …   Dictionary of invertebrate zoology

  • auricle — noun a) The outer ear or pinna. b) An ear shaped appendage of the left or right atrium of the heart. Syn: pinna, pavilion See Also: auricular …   Wiktionary

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