cork cambia

cork cambium

noun Botany.

Origin:
1875–80

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Collins
World English Dictionary
cork cambium
 
n
Also called: phellogen a layer of meristematic cells in the cortex of the stems and roots of woody plants, the outside of which gives rise to cork cells and the inside to secondary cortical cells (phelloderm)

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American Heritage
Science Dictionary
cork cambium  
A layer of cambium near the surface of the stems of woody plants that produces cork to the outside and phelloderm to the inside. It forms the middle layer of the periderm. Also called phellogen. See more at cambium.
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