Definition of thuja in English:


(also thuya)


  • An evergreen coniferous tree of a genus that includes the western red cedar.

    Also called arbor vitae
    • ‘The Arboretum contains four hundred species of tree and shrub including walnut, beech, cedar, giant thuya, cypress and cork oak.’
    • ‘Thuja (arborvitaes) has three primary species; one from the eastern United States, one from northern China and another from the Pacific Northwest.’
    • ‘I have looked at Thuja and it seems to be the tree for me.’
    • ‘A few years ago I killed the only Thuja I ever had.’
    • ‘The herbs blue flag root, thuja leaf and burdock root are good for reducing goiter (enlargement of the thyroid gland).’


Modern Latin (genus name), from Greek thuia, denoting an African tree formerly included in the genus.