[pin-eyt, -it]
resembling a feather, as in construction or arrangement; having parts arranged on each side of a common axis: a pinnate branch; pinnate trees.
Botany. (of a leaf) having leaflets or primary divisions arranged on each side of a common stalk.
Also, pinnated.

1695–1705; < Latin pinnātus feathered, winged. See pinna, -ate1

pinnately, pinnatedly, adverb
multipinnate, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
pinnate or pinnated (ˈpɪneɪt, ˈpɪnɪt)
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
[C18: from Latin pinnātus, from pinna feather]
pinnated or pinnated
[C18: from Latin pinnātus, from pinna feather]
'pinnately or pinnated
pin'nation or pinnated

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Science Dictionary
pinnate   (pĭn'āt')  Pronunciation Key 

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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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