1872, in the meaning defined above
Time Traveler for procambium
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Cite this Entry
“Procambium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/procambium. Accessed 4 Oct. 2022.
More from Merriam-Webster on procambium
Britannica.com: Encyclopedia article about procambium
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