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pinnate

[pin-eyt, -it] /ˈpɪn eɪt, -ɪt/
adjective
1.
resembling a feather, as in construction or arrangement; having parts arranged on each side of a common axis:
a pinnate branch; pinnate trees.
2.
Botany. (of a leaf) having leaflets or primary divisions arranged on each side of a common stalk.
Also, pinnated.
Origin
1695-1705
1695-1705; < Latin pinnātus feathered, winged. See pinna, -ate1
Related forms
pinnately, pinnatedly, adverb
multipinnate, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for pinnate
  • Leaves are alternate, about six inches long, pinnate lobed or coarsely toothed.
  • Subsequent rosette leaves oblanceolate, entire to pinnate-lobed.
  • The leaves are alternate, odd-pinnate, and the five-nine leaflets are glandular-dotted.
  • They alternate and have an average of five leaflets per pinnate compound.
  • It bears handsome, darkish pinnate leaves and rosy trumpet flowers in profusion at many times of the year.
British Dictionary definitions for pinnate

pinnate

/ˈpɪneɪt; ˈpɪnɪt/
adjective
1.
like a feather in appearance
2.
(of compound leaves) having the leaflets growing opposite each other in pairs on either side of the stem
Derived Forms
pinnately, adverb
pinnation, noun
Word Origin
C18: from Latin pinnātus, from pinna feather
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
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Word Origin and History for pinnate
adj.

1727, from Latin pinnatus "feathered, winged," from pinna "feather, wing" (see pin (n.)).

Online Etymology Dictionary, © 2010 Douglas Harper
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pinnate in Science
pinnate
  (pĭn'āt')   

Having parts or divisions arranged on each side of a common axis in the manner of a feather. Ash, hickory, and walnut trees have pinnate leaves.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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