protophloem

noun
pro·​to·​phlo·​em | \ ˌprō-tə-ˈflō-ˌem How to pronounce protophloem (audio) \

Definition of protophloem

: the first-formed phloem that develops from procambium, consists of narrow thin-walled cells, and is usually associated with a region of rapid growth

First Known Use of protophloem

1884, in the meaning defined above

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The first known use of protophloem was in 1884

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Cite this Entry

“Protophloem.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/protophloem. Accessed 26 January 2020.

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