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stipule

[stip-yool]
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noun Botany.
  1. one of a pair of lateral appendages, often leaflike, at the base of a leaf petiole in many plants.
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Origin of stipule

1785–95; < Latin stipula stalk, noun use of feminine of *stipulus firm (recorded in LL); akin to stipes
Related formsstip·u·lar, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for stipule

stipule

noun
  1. a small paired usually leaflike outgrowth occurring at the base of a leaf or its stalk
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Derived Formsstipular (ˈstɪpjʊlə), adjective

Word Origin

C18: from Latin; see stipe, stipes
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 stipule

n.

"small appendage at the base of the petiole of a leaf," 1793, from French stipule, from Latin stipula "stalk (of hay), straw."

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Online Etymology Dictionary, © 2010 Douglas Harper

stipule in Science

stipule

[stĭpyōōl]
  1. One of the usually small, paired parts resembling leaves at the base of a leafstalk in certain plants, such as roses and beans.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.