cambium
[ kam-bee-uh m ]
/ ˈkæm bi əm /
noun, plural cam·bi·ums, cam·bi·a [kam-bee-uh] /ˈkæm bi ə/. Botany.
a layer of delicate meristematic tissue between the inner bark or phloem and the wood or xylem, which produces new phloem on the outside and new xylem on the inside in stems, roots, etc., originating all secondary growth in plants and forming the annual rings of wood.
Origin of cambium
1665–75; < Late Latin: an exchange, barter; akin to Latin
cambiāre to exchange
OTHER WORDS FROM cambium
cam·bi·al, adjectiveWords nearby cambium
camberwell beauty,
camberwell carrot,
cambiata,
cambio,
cambist,
cambium,
cambodia,
cambodian,
cambogia,
camboose,
camborne-redruth
Example sentences from the Web for cambia
British Dictionary definitions for cambia
cambium
/ (ˈkæmbɪəm) /
noun plural -biums or -bia (-bɪə)
botany
a meristem that increases the girth of stems and roots by producing additional xylem and phloem
See also cork cambium
Derived forms of cambium
cambial, adjectiveWord Origin for cambium
C17: from Medieval Latin: exchange, from Late Latin
cambiāre to exchange, barter
Scientific definitions for cambia
cambium
[ kăm′bē-əm ]
Plural cambiums cambia
A cylindrical layer of tissue in the stems and roots of many seed-bearing plants, consisting of cells that divide rapidly to form new layers of tissue. Cambium is a kind of meristem and is most active in woody plants, where it lies between the bark and wood of the stem. It is usually missing from monocotyledons, such as the grasses.♦ The vascular cambium forms tissues that carry water and nutrients throughout the plant. On its outer surface, the vascular cambium forms new layers of phloem, and on its inner surface, new layers of xylem. The growth of these new tissues causes the diameter of the stem to increase.♦ The cork cambium creates cells that eventually become bark on the outside and cells that add to the cortex on the inside. In woody plants, the cork cambium is part of the periderm. See also secondary growth.
Cultural definitions for cambia
cambium
[ (kam-bee-uhm) ]
The layer of a tree where growth occurs, just under the bark.