Word.ws English Dictionary

Plural of arboretum

regular plural

The plural of arboretum is arboretums or arboreta.

Forms of arboretum

Singulararboretum /ɑː(ɹ)bəˈɹiːtəm/
Pluralarboretums
arboreta
Countablecountable

Meaning of arboretum

  1. noun A place where many varieties of tree are grown for research, educational, and ornamental purposes.

Full definition of arboretum

Questions about the plural of arboretum

What is the plural of arboretum?
The plural of arboretum is arboretums or arboreta.
Which is correct, arboretums or arboreta?
Both are used. arboretums is the more common of the two in English writing.
Is arboretum countable?
Arboretum is a countable noun.

Source and license

Adapted from Wiktionary: arboretum (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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