noun, plural ar·bo·re·tums, ar·bo·re·ta [ahr-buh-ree-tuh] /ˌɑr bəˈri tə/.
Origin of arboretum
Examples from the Web for arboretum
A large proportion of the total acreage of the Gardens is monopolized by the arboretum.
To-day we arrived at Derby, and hastened to see its Arboretum.Letters of a Traveller|William Cullen Bryant
Including the arboretum, their total area did not then exceed 11 acres.
Besides the works above mentioned, see Louden, Arboretum, ii.
The Arboretum, or third section, includes twenty-five acres, and contains all kinds of ornamental and fruit trees.Peculiarities of American Cities|Willard Glazier