Alburnum
noun
noun ·Rare ·Advanced level
Definitions
Noun
- 1 sapwood; the soft, newer wood in the trunk of a tree found between the bark and the hardened heartwood. uncountable, usually
Synonyms
All synonymsEtymology
From Latin alburnum, from albus (“white”), since it is often paler in color than the heartwood.
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.