protoxylem
[ proh-tuh-zahy-luh m, -lem ]
/ ˌproʊ təˈzaɪ ləm, -lɛm /
noun Botany.
the part of the primary xylem that develops first, consisting of narrow, thin-walled cells.
Words nearby protoxylem
prototroph, prototrophic, prototype, protovertebra, protoxide, protoxylem, protozoa, protozoan, protozoiasis, protozoicide, protozoology
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for protoxylem
protoxylem
/ (ˌprəʊtəˈzaɪləm) /
noun
the first-formed xylem tissue, consisting of extensible thin-walled cells thickened with rings or spirals of ligninCompare metaxylem
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Science definitions for protoxylem
protoxylem
[ prō′tə-zī′ləm ]
The first formed xylem that differentiates from the procambium.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.