Definition of tree surgeon noun from the Oxford Advanced Learner's Dictionary

 

tree surgeon

 noun
noun
BrE
 
; NAmE
 
(formal arborist
BrE BrE//ˈɑːbərɪst//
 
; NAmE NAmE//ˈɑːrbərɪst//
 
)
 
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a person whose job is treating trees that are damaged or have a disease, especially by cutting off branches, to try to preserve them
See the Oxford Advanced American Dictionary entry: tree surgeon