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pin·na

 (pĭn′ə)
n. pl. pin·nae (pĭn′ē) or pin·nas
1. Botany A leaflet or primary division of a pinnately compound leaf.
2. Zoology A feather, wing, fin, or similar appendage.
3. Anatomy See auricle.

[Latin, feather; see pet- in Indo-European roots.]

pin′nal adj.

pinna

(ˈpɪnə)
n, pl -nae (-niː) or -nas
1. (Botany) any leaflet of a pinnate compound leaf
2. (Zoology) zoology a feather, wing, fin, or similarly shaped part
3. (Anatomy) another name for auricle2
[C18: via New Latin from Latin: wing, feather, fin]

pin•na

(ˈpɪn ə)

n., pl. pin•nae (ˈpɪn i)
pin•nas.
1. a primary division of a pinnate leaf.
2.
a. a feather, wing, or winglike part.
b. a fin or flipper.
3. the visible portion of the ear that projects from the head.
[1660–70; < Latin: feather, wing, fin]
pin′nal, adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pinna - division of a usually pinnately divided leafpinna - division of a usually pinnately divided leaf
leaflet - part of a compound leaf
2.pinna - the externally visible cartilaginous structure of the external earpinna - the externally visible cartilaginous structure of the external ear
ear lobe, earlobe - the fleshy pendulous part of the external human ear
external ear, outer ear - the part of the ear visible externally
tragus - a small cartilaginous flap in front of the external opening of the ear
cauliflower ear - an auricle deformed by injury; common among boxers
cartilaginous structure - body structure given shape by cartilage
Translations

pin·na

n. L. pinna, pabellón de la oreja.
References in periodicals archive ?
The symmetrical pinnae are utilised with Bruel & Kjaer's Head and Torso Simulator (HATS), Types 4128C and D, which consists of a dummy with built-in ear and mouth simulators, to provide a realistic replica of an average, adult human head and torso.
The distinguishing characters used were rhizome scales with denticulate claw-like teeth, upper surfaces of the rachises provided with clavate-glandular hairs, suprabasal pinnae with the pinnules arranged catadromically, and spores that are finely echinulate.
Different vertebrate lineages have evolved external and/or internal anatomical adaptations to enhance these auditory cues, such as pinnae and interaural canals," Bierman said.
The surface area of each of the pinnae was estimated by measuring its width and height and calculating the area using 1/2 base x height in order to account for the triangular shape of the pinnae.
I have this defect by birth and have no external pinnae nor any hole," he told IBN Live.
Lesions in horses are solitary or multiple nodules that are often ulcerated and most commonly occur on the head, pinnae, legs, and neck.
globulifera, which it resembles in some of its vegetative characteristics, particularly the columnar to narrow volcano-shaped glands on the rachis between each pair of pinnae.
We measured mass (g), right pinnae length (mm), fight tarsus length (mm), and right unflattened wing cord length from bend of wing to tip of longest primary (mm) for each captured male.
Among others, these include hypoplastic zygomas, downward sloping palpebral fissures, malformed pinnae, abnormalities of the external auditory canal (stenosis or atresia), maldevelopment of the ossicles, absence of middle ear and tympanic spaces, pharyngeal hypoplasia, deficient mandibular rami and a cleft palate.
Trailing or climbing by a twining rachis; fronds 1 to several meters long, pinnately divided; sporangia marginal on fingerlike projections developing from the pinnae margins.
A reddening of the pinnae, observed in two of six rabbits treated with C.
Slightly smaller than the species, it has crested pinnae (the leaflets of its pinnate leaves) tips and fronds, creating a very interesting shape.