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medullary ray

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noun Botany.

(in the stems of woody plants) one of the vertical bands or plates of unspecialized tissue that radiate between the pith and the bark.

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Also called pith ray.

Origin of medullary ray

First recorded in 1820–30
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

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British Dictionary definitions for medullary ray

medullary ray

noun

any of the sheets of conducting tissue that run radially through the vascular tissue of some higher plants
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

Medical definitions for medullary ray

medullary ray

n.

The center of the renal, cortical lobule, consisting of the ascending or descending limbs of the nephronic loop or of the collecting tubules.Ferrein's pyramid
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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