noun (plural arboretums or arboreta /-ˈrētə/)
A botanical garden devoted to trees.
- The Center for Plant Conservation, housed at the Missouri Botanical Garden, has organized a network of arboreta that keep endangered plants from across the United States.
- At the northeast corner of the arboretum is the wooden Tree House.
- It is one of the first trees in the arboretum to come into leaf and flowers prolifically with large creamy/pink blossoms in spring.
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