cambium Meaning, Definition & Usage

noun a formative one-cell layer of tissue between xylem and phloem in most vascular plants that is responsible for secondary growth
noun the inner layer of the periosteum

LL. cambium exchange, fr. L. cambire to exchange. It was supposed that cambium was sap changing into wood.

(Bot.) A series of formative cells lying outside of the wood proper and inside of the inner bark. The growth of new wood takes place in the cambium, which is very soft.
(Med.) A fancied nutritive juice, formerly supposed to orgiginate in the blood, to repair losses of the system, and to promote its increase. Dunglison.