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pinnate

American  
[pin-eyt, -it] / ˈpɪn eɪt, -ɪt /
Often pinnated

adjective

Biology.
  1. (of a leaf ) having leaflets or primary divisions arranged on each side of a common stalk.

    the pinnate leaves of a palm tree.

  2. resembling a feather, as in construction or arrangement; having parts arranged on each side of a common axis.

    This type of sea cucumber has a mouth surrounded by up to 25 pinnate tentacles.


pinnate British  
/ 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

"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

pinnate Scientific  
/ pĭnāt′ /
  1. 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.


Other Word Forms

Etymology

Origin of pinnate

First recorded in 1695–1705, pinnate is from the Latin word pinnātus “feathered, winged.” See pinna, -ate 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

“These are all cycads,” the composer Tobias Picker said, gesturing at a low canopy of fanned-out, pinnate leaves near the entrance of the conservatory at the New York Botanical Garden.

From New York Times May 25, 2022

The pronouncer told her it meant a genus of tropical Asiatic and Australian trees having pinnate leaves with imbricated petals.

From New York Times Jul. 9, 2021

A Victorian field guide, for example, describes Agrimonia in rather uncompromising terms: "Herbs with stipulate, pinnate, serrate leaves and terminal bracteate spine-like racemes of small yellow flowers."

From The Guardian May 31, 2012

Drupe oblong, with thin flesh and a bony 2-celled putamen.—Woody high-climbing twiners, with the pinnate veins of the leaves straight and parallel, the small greenish-white flowers in small panicles.

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

Annual, hairy; stems low, spreading; stipules acute; leaves pinnate, the leaflets sessile, 1–2-pinnatifid; peduncles several-flowered.—N. Y.,

From The Manual of the Botany of the Northern United States Including the District East of the Mississippi and North of North Carolina and Tennessee by Asa Gray

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