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.
Often pin·nat·ed [pin-ey-tid] /ˈpɪn eɪ tɪd/.
Origin of pinnate
Related formspin·nate·ly, pin·nat·ed·ly, adverbmul·ti·pin·nate, adjective
First recorded in 1695–1705, pinnate
is from the Latin
feathered, winged. See pinna
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for pinnate
Historical Examples of pinnate
The leaves are large, pinnate, shining, and very smooth and irregular.
Each apophysis is pinnate with opposite pinnul, or crossed at right angles by three to six parallel transverse rods.
The leaves are pinnate, and they unroll, when they expand, like those of the ferns.
Small, fronds 1-2 pinnate, fruit-dots linear-oblong, often confluent.
Medium-sized, fronds thin, oblong-lanceolate, 2-3 pinnate or pinnatifid.
British Dictionary definitions for pinnate
Derived Formspinnately, adverbpinnation, noun
like a feather in appearance
(of compound leaves) having the leaflets growing opposite each other in pairs on either side of the stem
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
Word Origin and History for pinnate
1727, from Latin pinnatus "feathered, winged," from pinna "feather, wing" (see pin (n.)).
Online Etymology Dictionary, © 2010 Douglas Harper
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
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