arboretum

Etymology

It is borrowed from Latin arborētum (“a place grown with trees”),^{[2][3][4][5][6]} from arbor (“tree”) and the suffix -ētum, used to name places where a given plant grows, such as gardens and woods.^[3][7] Merriam-Webster labels the English word New Latin, taken from the classical noun,^[8][9] and Dictionary.com compares alameda for the suffix.^[7]

Earliest recorded meaning

A place where rare trees are grown and shown; a botanical tree garden: the OED's first record is from 1838, in J. C. Loudon's Arboretum,^[2] the date also given by Barnhart, Etymonline and Merriam-Webster's Collegiate.^[5][3][10] Merriam-Webster Unabridged gives 1796 as the first known use.^[8]

Semantic evolution

The OED's definition stresses the growing and display of rare trees,^[2] while the modern American dictionaries add shrubs and other plants grown for scientific, educational and ornamental purposes.^[8][11]

Timeline

• 1796 – a garden where trees are grown for study and display.^[8] The OED's first record of the word is from 1838.^[2][5][3]

Meanings

Noun

1. A place where many kinds of trees and shrubs are grown for study, education and display; a botanical garden of trees: The university arboretum holds over two hundred kinds of oak.^[8][12][11]

Related words

• arbor
• alameda

Usage notes

The plural is arboretums or the Latin arboreta;^[8][12] Merriam-Webster gives arboretums first,^[8] and Collins and the Shorter Oxford give arboreta first.^[12][13]

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
3. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
4. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
5. ^ a b c Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
6. ^ Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
7. ^ a b Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
8. ^ a b c d e f g Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
9. ^ Gove, Philip Babcock, ed. (1961), Webster's Third New International Dictionary of the English Language, Unabridged, Springfield, Mass.: G. & C. Merriam
10. ^ Merriam-Webster's Collegiate Dictionary (2003), 11th ed., Springfield, Mass.: Merriam-Webster
11. ^ a b The American Heritage Dictionary of the English Language (1992), 3rd ed., Boston: Houghton Mifflin
12. ^ a b c Collins English Dictionary (2023), Glasgow: HarperCollins
13. ^ Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press