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单词 phloem
释义

phloem

[ floh-em ]
/ ˈfloʊ ɛm /

noun

the part of a vascular bundle consisting of sieve tubes, companion cells, parenchyma, and fibers and forming the food-conducting tissue of a plant.

Origin of phloem

First recorded in 1870–75; from German Phloëm, irregularly formed from Greek phló(os), phloiós “bark (of a tree), rind (of a fruit)” + -ēma passive noun suffix

Words nearby phloem

phlegmonous abscess, phlegmonous gastritis, phlegmonous mastitis, phlegmy, Phlm., phloem, phloem necrosis, phloem ray, phlogistic, phlogiston, phlogopite
Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for phloem

British Dictionary definitions for phloem

phloem
/ (ˈfləʊɛm) /

noun

tissue in higher plants that conducts synthesized food substances to all parts of the plant

Word Origin for phloem

C19: via German from Greek phloos bark
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

Cultural definitions for phloem

phloem
[ (floh-em) ]

The system of vessels in a plant that carries food from the leaves to the rest of the plant. (See xylem.)

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Scientific definitions for phloem

phloem
[ flōĕm′ ]

A tissue in vascular plants that conducts food from the leaves and other photosynthetic tissues to other plant parts. Phloem consists of several different kinds of cells: sieve elements, parenchyma cells, sclereids, and fibers. In mature woody plants it forms a sheathlike layer of tissue in the stem, just inside the bark. See more at cambium photosynthesis. Compare xylem.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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更新时间:2024/9/21 16:35:41