pinnate

[ pin-eyt, -it ]
/ ˈpɪn eɪt, -ɪt /

adjective

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.

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Often pin·nat·ed [pin-ey-tid] /ˈpɪn eɪ tɪd/.

Origin of pinnate

First recorded in 1695–1705, pinnate is from the Latin word pinnātus feathered, winged. See pinna, -ate1

OTHER WORDS FROM pinnate

pin·nate·ly, pin·nat·ed·ly, adverbmul·ti·pin·nate, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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British Dictionary definitions for pinnate

pinnate

pinnated

/ (ˈpɪneɪt, ˈpɪnɪt) /

adjective

like a feather in appearance
(of compound leaves) having the leaflets growing opposite each other in pairs on either side of the stem

Derived forms of pinnate

pinnately, adverbpinnation, noun

Word Origin for pinnate

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

Scientific definitions for pinnate

pinnate
[ pĭnāt′ ]

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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.