名詞 arboretum:

1. a facility where trees and shrubs are cultivated for exhibition
   同義詞：botanical garden

ar.bo.re.tum

n.（名詞）
【復(fù)數(shù)】 ar.bo.re.tums 或 ar.bo.re.ta [-t…]
A place where an extensive variety of woody plants are cultivated for scientific, educational, and ornamental purposes.
樹木園，植物園：為科學(xué)、教育及裝飾目而大量種植各類木本植物的地方

來源：
Latin arborôtum [a place grown with trees]
拉丁語 arborôtum [種有樹的地方]
from arbor [tree]
源自 arbor [樹]