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[per-uh-sahy-kuh l] /ˈpɛr əˌsaɪ kəl/
noun, Botany
the outermost cell layer of the stele in a plant, frequently becoming a multilayered zone.
1890-95; < Greek períkyklos. See peri-, cycle Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for pericycle
  • Sclerenchymatous cells mainly occur in hypodermis, pericycle, secondary xylem and phloem.
  • The outer part, known as the pericycle, surrounds the actual vascular tissue.
  • As the stele increases in diameter, the cortex, pericycle and endodermis are lost.
British Dictionary definitions for pericycle


a layer of plant tissue beneath the endodermis: surrounds the conducting tissue in roots and certain stems
Derived Forms
pericyclic (ˌpɛrɪˈsaɪklɪk; -ˈsɪk-) adjective
Word Origin
C19: from Greek perikuklos
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
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pericycle in Science
A layer of nonvascular tissue that surrounds the vascular tissues in the roots of plants and is in turn surrounded by the endodermis. New lateral roots begin growth from the pericycle.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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