cambium
noun
cam·bi·um ˈkam-bē-əm 
plural cambiums or cambia ˈkam-bē-ə
: 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
cambial
ˈkam-bē-əl
adjective 
Example Sentences
Recent Examples on the Web Just beneath the outer layer of every branch and twig is the cambium, a thin green layer. 
oregonlive, 29 May 2022 The beetles burrow into the pines’ bark and lay eggs in living tissues, which the larvae eat through, creating galleries in the trees’ phloem and cambium, eventually disrupting the transport of water and nutrients from the roots to branches. Brian Maffly, The Salt Lake Tribune, 29 July 2022 Sometimes the cambium layer, which is the green tissue just under the bark, comes off with the bark. Lynn Coulter, Better Homes & Gardens, 13 June 2022 In winter, most of the living tissue is found in the overwintering buds and in a green layer under the bark called the cambium. Beth Botts, chicagotribune.com, 10 Apr. 2022 Windham suggests that most cankers are associated with wounds, often during pruning, that open the inner cambium to disease. Nan Sterman, San Diego Union-Tribune, 7 Aug. 2021 Yet the tree was still alive, with just one rope of cambium — the outer bark that transports water and nutrients — snaking up the trunk. Ned Rozell, Anchorage Daily News, 24 July 2021 Till and Shaw cut into the moist and apparently healthy cambium layer of a 70-year-old fir tree lying on the ground. oregonlive, 8 May 2021 The aforementioned cambium layer is green in stems or branches that are still alive. Daniel Cunningham, Dallas News, 24 Feb. 2021 See More
oregonlive, 29 May 2022 The beetles burrow into the pines’ bark and lay eggs in living tissues, which the larvae eat through, creating galleries in the trees’ phloem and cambium, eventually disrupting the transport of water and nutrients from the roots to branches. Brian Maffly, The Salt Lake Tribune, 29 July 2022 Sometimes the cambium layer, which is the green tissue just under the bark, comes off with the bark. Lynn Coulter, Better Homes & Gardens, 13 June 2022 In winter, most of the living tissue is found in the overwintering buds and in a green layer under the bark called the cambium. Beth Botts, chicagotribune.com, 10 Apr. 2022 Windham suggests that most cankers are associated with wounds, often during pruning, that open the inner cambium to disease. Nan Sterman, San Diego Union-Tribune, 7 Aug. 2021 Yet the tree was still alive, with just one rope of cambium — the outer bark that transports water and nutrients — snaking up the trunk. Ned Rozell, Anchorage Daily News, 24 July 2021 Till and Shaw cut into the moist and apparently healthy cambium layer of a 70-year-old fir tree lying on the ground. oregonlive, 8 May 2021 The aforementioned cambium layer is green in stems or branches that are still alive. Daniel Cunningham, Dallas News, 24 Feb. 2021 See More Word History
Etymology
New Latin, from Medieval Latin, exchange, from Latin cambire to exchange — more at change
First Known Use
1672, in the meaning defined above
Phrases Containing cambium
Kids Definition
cambium
noun
cam·bi·um ˈkam-bē-əm
plural cambiums or cambia
-bē-ə
: soft tissue in woody plants from which new wood and bark grow