phloem

noun
phlo·​em | \ ˈflō-ˌem How to pronounce phloem (audio) \

Definition of phloem

: a complex tissue in the vascular system of higher plants that consists mainly of sieve tubes and elongated parenchyma cells usually with fibers and that functions in translocation and in support and storage — compare xylem

Examples of phloem in a Sentence

Recent Examples on the Web The fungi thrive in those channels and the phloem and wood around it. Star Tribune, 10 Mar. 2021 Larvae hatch from eggs and chew side galleries, feeding on the phloem and the fungi. Hillary Rosner, National Geographic, 1 Oct. 2020 The galleries block nutrient flow in the tree’s phloem layer. Hillary Rosner, National Geographic, 1 Oct. 2020 Just inside the bark is a cylinder of tissue known as the phloem. Neil Sperry, ExpressNews.com, 16 Apr. 2020 When the phloem is lost all the way around by injury like this (or by weed trimmer damage at ground line), the roots will die and the tree will die. Neil Sperry, ExpressNews.com, 16 Apr. 2020 If the tree is still creating foliage, then water and nutrients are being transported from the roots to the tree canopy, so the phloem and xylem are still functional. oregonlive, 9 Feb. 2020 Christopher Vincent, a physiologist at the University of Florida who studies citrus greening, said the waxy coating on the leaves of orange trees has been an impediment to delivering oxytetracycline into the plant’s phloem, or vascular system. Andrew Jacobs, New York Times, 16 Aug. 2019 The part of the circulatory system (called the vascular system in plants) that carries the food (basically sugar water) is located just below the bark and is called the phloem. Dan Gill, NOLA.com, 18 May 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'phloem.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of phloem

1872, in the meaning defined above

History and Etymology for phloem

German, from Greek phloios, phloos bark; perhaps akin to Greek phlein to teem, abound, phlyein, phlyzein to boil over — more at fluid

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Cite this Entry

“Phloem.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/phloem. Accessed 22 Jun. 2021.

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More from Merriam-Webster on phloem

Britannica.com: Encyclopedia article about phloem

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