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From Latin arbor (tree) + vitae, genitive singular of vita (life)


arbor vitae (plural arbor vitae or arbor vitaes or arbores vitae)

  1. Any of the evergreen trees and shrubs known as arborvitae, of the genera Thuja and Thujopsis, or of the species Platycladus orientalis.
    • 1882, Annual Report of the Minnesota State Horticultural Society, page 27:
      Next spring the owner of the hedge will be very much surprised to find a number of his arbor vitae deceased, and he will straightway blame himself and his horse? Not he! The nurseyman, sir, must have delivered him some poor stock!
  2. (anatomy) White matter of the cerebellum.
    connected to fibres of the arbor vitae and to divaricating axons

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