cambium layer

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• cambium — noun /ˈkambɪəm/ A layer of cells between the xylem and the phloem that is responsible for the secondary growth of roots and stems. During winter we perceive no change in the cells of the cambium layer, which are filled with nutritive matter …   Wiktionary

• cambium — ► NOUN (pl. cambia or cambiums) Botany ▪ a layer of cells in a plant stem between the xylem and phloem, from which new tissue grows by cellular division. ORIGIN Latin, change, exchange …   English terms dictionary

• cambium — [kam′bē əm] n. [ModL < ML < LL cambiare: see CHANGE] a layer of formative cells between the wood and bark in dicotyledonous plants: these cells cause the girth of the stem to increase by dividing and differentiating to form new xylem and… …   English World dictionary

• cambium — cambial, adj. /kam bee euhm/, n., pl. cambiums, cambia / bee euh/. Bot. 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 …   Universalium

• Cambium — In botany the cambium is a layer or layers of tissue, also known as lateral meristems, that are the source of cells for secondary growth. There are two types of cambium*Cork cambium *Vascular cambiumReferences*Taiz, L and Zeiger, E. 1998. Plant… …   Wikipedia

• cambium — Bot. Meristematic plant tissue, commonly present as a thin layer which forms new cells on both sides. Located either in vascular tissue (vascular cambium), forming xylem on one side and phloem on the other, or in cork (cork cambium or phellogen) …   Dictionary of molecular biology

• cambium — pl cambia A one or two cells thick layer of plant meristematic tissue, between the xylem and phloem tissues, which gives rise to secondary tissues, thus resulting in an increase in the diameter of the stem or root. The two most important cambia… …   Glossary of Biotechnology

• cambium — The inner layer of the periosteum in membranous ossification. [L. exchange] * * * cam·bi·um (kamґbe əm) [L. “exchange”] 1. the loose cellular inner layer of the periosteal tissue in the intramembranous ossification of bone. 2. a layer of …   Medical dictionary

• layer — A sheet of one substance lying on another and distinguished from it by a difference in texture or color or by not being continuous with it. SEE ALSO: stratum, lamina. SYN: panniculus. ameloblastic l. the internal l. of the enamel organ. SYN: enam …   Medical dictionary

• cambium — noun (plural biums or cambia) Etymology: New Latin, from Medieval Latin, exchange, from Latin cambire to exchange more at change Date: 1671 a thin formative layer between the xylem and phloem of most vascular plants that gives rise to new cells… …   New Collegiate Dictionary

• cambium — cam•bi•um [[t]ˈkæm bi əm[/t]] n. pl. bi•ums, bi•a [[t] bi ə[/t]] bot a layer of meristematic plant tissue, between the inner bark and wood, that produces new bark and wood cells, causing the stem or trunk to grow in diameter and forming the… …   From formal English to slang