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Definition of pro preposition from the Oxford Advanced Learner's Dictionary

pro

preposition
 
/prəʊ/
 
/prəʊ/
(informal)
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  1. if somebody is pro somebody/something, they are in favour of or support that person or thing
    • He has always been pro the environment.
    compare anti
See pro in the Oxford Advanced American Dictionary
buttercup
noun
 
 
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Plants and trees
C2
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