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Definition of blood donor noun from the Oxford Advanced Learner's Dictionary

blood donor

noun
 
/ˈblʌd dəʊnə(r)/
 
/ˈblʌd dəʊnər/
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  1. a person who gives some of his or her blood to be used in the medical treatment of other people
See blood donor in the Oxford Advanced American Dictionary
trait
noun
 
 
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