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cambium
(botany) A layer of cells between the xylem and the phloem that is responsible for the secondary growth of roots and stems.
💬 Quotations
The inner structure of these dicotyledonous trunks is seen when we examine the cross section cut of a felled tree. In the centre is the heartwood, the durable wood of commercial value, the cells of which are hard and dry; next it the soft sapwood, the living part of the tree containing cells filled with sap; then the cambium layer, the zone of growing cells, and outside of this the bark.
(anatomy) Periosteum, a membrane that covers the outer surface of bones
(obsolete) One of the humours formerly believed to nourish the bodily organs.
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