arbor vitae

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arbor vitae

any of several Asian and North American evergreen coniferous trees of the genera Thuja and Thujopsis, esp Thuja occidentalis, having tiny scalelike leaves and egglike cones

arbor vitae

[′är·bər ′vīd·ē]
(neuroscience)
The treelike arrangement of white nerve tissue seen in a median section of the cerebellum.