pinna

[ pin-uh ]

/ ˈpɪn ə /

SEE MORE SYNONYMS FOR pinna ON THESAURUS.COM

noun, plural pin·nae [pin-ee] /ˈpɪn i/, pin·nas.

Botany. one of the primary divisions of a pinnate leaf.

Zoology.

a feather, wing, or winglike part.
a fin or flipper.

Anatomy. auricle(def 1a).

Nearby words

pinko, pinkroot, pinkster, pinky, pinky bar, pinna, pinnace, pinnacle, pinnate, pinnati-, pinnatifid

Origin of pinna

1660–70; < Latin: feather, wing, fin

Related forms

pin·nal, adjective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for pinna

Pinna dorsalis corpore pen qualis, radiis simplicibus flexilibus.
Zoological Illustrations, Volume I|William Swainson
When the pea-crab discovers a supply of food he brings it to his friend, the Pinna, to be divided equally.
Digby Heathcote|W.H.G. Kingston
Pinna bullata, Swainson (Fig. 168), is also a well-known species.
The Ocean World:|Louis Figuier
Gloves have been made from the byssal fibers of Pinna mixed with silk.
The Sea-beach at Ebb-tide|Augusta Foote Arnold

He says that Tarentine muslins, woven from the filaments of the pinna dipped in the dye of the murex, rivalled those of Cos.
Needlework As Art|Marian Alford

British Dictionary definitions for pinna

pinna

/ (ˈpɪnə) /

noun plural -nae (-niː) or -nas

any leaflet of a pinnate compound leaf

zoology a feather, wing, fin, or similarly shaped part

another name for auricle (def. 2)

Word Origin for pinna

C18: via New Latin from Latin: wing, feather, fin

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012