Bible Encyclopedias
Alburnum
1911 Encyclopedia Britannica
(sapwood), the outermost and youngest part of the wood of a tree, through which the sap rises. It is distinguished from the harder inner and older wood, the duramen or heart-wood.
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Bibliography Information
Chisholm, Hugh, General Editor. Entry for 'Alburnum'. 1911 Encyclopedia Britanica. https://www.studylight.org/encyclopedias/eng/bri/a/alburnum.html. 1910.