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English definition of “cambium”

cambium

noun [C or U] uk   /ˈkæm.bi.əm/ (plural cambiums or cambia) specialized us  
a layer of cells in the roots and stems of some plants that divide to produce new tissue, such as xylem and phloemParts of plants
(Definition of cambium from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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