noun, plural pinnae [pin-ee] , pinnas.
Botany. one of the primary divisions of a pinnate leaf.
a feather, wing, or winglike part.
a fin or flipper.
Anatomy, auricle ( def 1a ).

1660–70; < Latin: feather, wing, fin

pinnal, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To pinnae
World English Dictionary
pinna (ˈpɪnə)
n , pl -nae, -nas
1.  any leaflet of a pinnate compound leaf
2.  zoology a feather, wing, fin, or similarly shaped part
3.  another name for auricle
[C18: via New Latin from Latin: wing, feather, fin]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary

pinna pin·na (pĭn'ə)
n. pl. pin·nae (pĭn'ē)
See auricle.

pin'nal adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
pinna   (pĭn'ə)  Pronunciation Key 
Plural pinnae (pĭn'ē) or pinnas
A leaflet or primary division of a pinnately compound leaf, especially of a fern frond.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
Related Words
Copyright © 2014, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature