[ proh-tuh-floh-em ]
/ ˌproʊ təˈfloʊ ɛm /
the part of the primary phloem that develops first, consisting of narrow, thin-walled cells.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
Scientific definitions for protophloem
[ prō′tə-flō′ĕm′ ]
The first formed phloem that differentiates from the procambium.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.