cambium


cam·bi·um

noun \ˈkam-bē-əm\
plural cam·bi·ums or -bia \-bē-ə\

Definition of CAMBIUM

:  a thin formative layer between the xylem and phloem of most vascular plants that gives rise to new cells and is responsible for secondary growth
cam·bi·al \-bē-əl\ adjective

Origin of CAMBIUM

New Latin, from Medieval Latin, exchange, from Latin cambire to exchange — more at change
First Known Use: 1671

cambium

noun    (Concise Encyclopedia)

In plants, a layer of actively dividing cells between xylem (fluid-conducting) and phloem (food-conducting) tissues that is responsible for the secondary growth of stems and roots, resulting in an increase in thickness. A cambium may also form within callus tissues. See also bark, wood.

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