Plural of arboretum; places where collections of different tree species are grown and displayed for study.
Latin plural of arboretum (from arbor, tree). The Latin -etum suffix originally meant a place planted with a particular thing, like a vineyard (from vinum).
The Bronx Zoo's New York Botanical Garden contains arboreta from five continents, and these places are time capsules—some trees planted 150 years ago are still there, making them living museums of scientific history.
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