WordReference Random House Unabridged Dictionary of American English © 2020
ar•bor•i•za•tion  (är′bər ə zāshən),USA pronunciation n. 
  1. Mineralogya treelike appearance, as in certain minerals or fossils.
  2. Physiology, Anatomy[Anat.]the branchlike appearance characteristic of certain nerve-cell outgrowths.
  • arbor3 + -ization 1785–95

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